Home / 8,181.45-11,290.47-4,644.72

Finding the Fourth Proportional to 8,181.45, 11,290.47 and 4,644.72

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Solution

The fourth proportional to 8,181.45, 11,290.47 and 4,644.72 is: 6,409.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.45 : 11,290.47 = 4,644.72 : x
  2. Step 2: Convert to fraction form
    8,181.45/11,290.47 = 4,644.72/x
  3. Step 3: Cross multiply
    8,181.45x = 11,290.47 × 4,644.72
  4. Step 4: Simplify right side
    8,181.45x = 52,441,071.82
  5. Step 5: Solve for x
    x = 52,441,071.82/8,181.45
  6. Step 6: Final answer
    x = 6,409.75

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Double scale
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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.