Home / 1,487.68-2,055.96-1,115.92

Finding the Fourth Proportional to 1,487.68, 2,055.96 and 1,115.92

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Solution

The fourth proportional to 1,487.68, 2,055.96 and 1,115.92 is: 1,542.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.68 : 2,055.96 = 1,115.92 : x
  2. Step 2: Convert to fraction form
    1,487.68/2,055.96 = 1,115.92/x
  3. Step 3: Cross multiply
    1,487.68x = 2,055.96 × 1,115.92
  4. Step 4: Simplify right side
    1,487.68x = 2,294,286.88
  5. Step 5: Solve for x
    x = 2,294,286.88/1,487.68
  6. Step 6: Final answer
    x = 1,542.19

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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.