Home / 2,487.30-3,431.62-1,542.75

Finding the Fourth Proportional to 2,487.30, 3,431.62 and 1,542.75

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Solution

The fourth proportional to 2,487.30, 3,431.62 and 1,542.75 is: 2,128.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.30 : 3,431.62 = 1,542.75 : x
  2. Step 2: Convert to fraction form
    2,487.30/3,431.62 = 1,542.75/x
  3. Step 3: Cross multiply
    2,487.30x = 3,431.62 × 1,542.75
  4. Step 4: Simplify right side
    2,487.30x = 5,294,143.62
  5. Step 5: Solve for x
    x = 5,294,143.62/2,487.30
  6. Step 6: Final answer
    x = 2,128.47

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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.