Home / 9,165.15-12,645.01-5,387.11

Finding the Fourth Proportional to 9,165.15, 12,645.01 and 5,387.11

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Solution

The fourth proportional to 9,165.15, 12,645.01 and 5,387.11 is: 7,432.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.15 : 12,645.01 = 5,387.11 : x
  2. Step 2: Convert to fraction form
    9,165.15/12,645.01 = 5,387.11/x
  3. Step 3: Cross multiply
    9,165.15x = 12,645.01 × 5,387.11
  4. Step 4: Simplify right side
    9,165.15x = 68,120,059.82
  5. Step 5: Solve for x
    x = 68,120,059.82/9,165.15
  6. Step 6: Final answer
    x = 7,432.51

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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.