Home / 2,382.45-3,287.19-1,387.13

Finding the Fourth Proportional to 2,382.45, 3,287.19 and 1,387.13

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Solution

The fourth proportional to 2,382.45, 3,287.19 and 1,387.13 is: 1,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,382.45 : 3,287.19 = 1,387.13 : x
  2. Step 2: Convert to fraction form
    2,382.45/3,287.19 = 1,387.13/x
  3. Step 3: Cross multiply
    2,382.45x = 3,287.19 × 1,387.13
  4. Step 4: Simplify right side
    2,382.45x = 4,559,743.43
  5. Step 5: Solve for x
    x = 4,559,743.43/2,382.45
  6. Step 6: Final answer
    x = 1,913.89

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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.