Home / 9,132.72-12,603.11-5,155.13

Finding the Fourth Proportional to 9,132.72, 12,603.11 and 5,155.13

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Solution

The fourth proportional to 9,132.72, 12,603.11 and 5,155.13 is: 7,114.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,132.72 : 12,603.11 = 5,155.13 : x
  2. Step 2: Convert to fraction form
    9,132.72/12,603.11 = 5,155.13/x
  3. Step 3: Cross multiply
    9,132.72x = 12,603.11 × 5,155.13
  4. Step 4: Simplify right side
    9,132.72x = 64,970,581.66
  5. Step 5: Solve for x
    x = 64,970,581.66/9,132.72
  6. Step 6: Final answer
    x = 7,114.05

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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.