Home / 9,138.29-12,601.85-5,553.74

Finding the Fourth Proportional to 9,138.29, 12,601.85 and 5,553.74

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Solution

The fourth proportional to 9,138.29, 12,601.85 and 5,553.74 is: 7,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.29 : 12,601.85 = 5,553.74 : x
  2. Step 2: Convert to fraction form
    9,138.29/12,601.85 = 5,553.74/x
  3. Step 3: Cross multiply
    9,138.29x = 12,601.85 × 5,553.74
  4. Step 4: Simplify right side
    9,138.29x = 69,987,402.15
  5. Step 5: Solve for x
    x = 69,987,402.15/9,138.29
  6. Step 6: Final answer
    x = 7,658.70

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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.