Home / 2,331.36-3,215.28-1,543.92

Finding the Fourth Proportional to 2,331.36, 3,215.28 and 1,543.92

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Solution

The fourth proportional to 2,331.36, 3,215.28 and 1,543.92 is: 2,129.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.36 : 3,215.28 = 1,543.92 : x
  2. Step 2: Convert to fraction form
    2,331.36/3,215.28 = 1,543.92/x
  3. Step 3: Cross multiply
    2,331.36x = 3,215.28 × 1,543.92
  4. Step 4: Simplify right side
    2,331.36x = 4,964,135.10
  5. Step 5: Solve for x
    x = 4,964,135.10/2,331.36
  6. Step 6: Final answer
    x = 2,129.29

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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.