Home / 2,180.09-3,008.39-1,185.36

Finding the Fourth Proportional to 2,180.09, 3,008.39 and 1,185.36

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Solution

The fourth proportional to 2,180.09, 3,008.39 and 1,185.36 is: 1,635.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.09 : 3,008.39 = 1,185.36 : x
  2. Step 2: Convert to fraction form
    2,180.09/3,008.39 = 1,185.36/x
  3. Step 3: Cross multiply
    2,180.09x = 3,008.39 × 1,185.36
  4. Step 4: Simplify right side
    2,180.09x = 3,566,023.09
  5. Step 5: Solve for x
    x = 3,566,023.09/2,180.09
  6. Step 6: Final answer
    x = 1,635.72

Related Problems

Find fourth proportional to 1,090.04, 1,504.20 and 592.68
Half scale
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Double scale
Find fourth proportional to 2,181.09, 3,009.77 and 1,186.36
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.