Home / 8,181.38-11,290.32-4,645.14

Finding the Fourth Proportional to 8,181.38, 11,290.32 and 4,645.14

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Solution

The fourth proportional to 8,181.38, 11,290.32 and 4,645.14 is: 6,410.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.38 : 11,290.32 = 4,645.14 : x
  2. Step 2: Convert to fraction form
    8,181.38/11,290.32 = 4,645.14/x
  3. Step 3: Cross multiply
    8,181.38x = 11,290.32 × 4,645.14
  4. Step 4: Simplify right side
    8,181.38x = 52,445,117.04
  5. Step 5: Solve for x
    x = 52,445,117.04/8,181.38
  6. Step 6: Final answer
    x = 6,410.31

Related Problems

Find fourth proportional to 4,090.69, 5,645.16 and 2,322.57
Half scale
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Double scale
Find fourth proportional to 8,182.38, 11,291.70 and 4,646.14
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.