Home / 2,331.32-3,217.12-1,387.19

Finding the Fourth Proportional to 2,331.32, 3,217.12 and 1,387.19

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Solution

The fourth proportional to 2,331.32, 3,217.12 and 1,387.19 is: 1,914.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.32 : 3,217.12 = 1,387.19 : x
  2. Step 2: Convert to fraction form
    2,331.32/3,217.12 = 1,387.19/x
  3. Step 3: Cross multiply
    2,331.32x = 3,217.12 × 1,387.19
  4. Step 4: Simplify right side
    2,331.32x = 4,462,761.27
  5. Step 5: Solve for x
    x = 4,462,761.27/2,331.32
  6. Step 6: Final answer
    x = 1,914.27

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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.