Home / 9,731.20-13,430.10-5,539

Finding the Fourth Proportional to 9,731.20, 13,430.10 and 5,539

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Solution

The fourth proportional to 9,731.20, 13,430.10 and 5,539 is: 7,644.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,731.20 : 13,430.10 = 5,539 : x
  2. Step 2: Convert to fraction form
    9,731.20/13,430.10 = 5,539/x
  3. Step 3: Cross multiply
    9,731.20x = 13,430.10 × 5,539
  4. Step 4: Simplify right side
    9,731.20x = 74,389,323.90
  5. Step 5: Solve for x
    x = 74,389,323.90/9,731.20
  6. Step 6: Final answer
    x = 7,644.41

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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.