Home / 9,138.50-13,711.30-3,590.86

Finding the Fourth Proportional to 9,138.50, 13,711.30 and 3,590.86

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Solution

The fourth proportional to 9,138.50, 13,711.30 and 3,590.86 is: 5,387.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.50 : 13,711.30 = 3,590.86 : x
  2. Step 2: Convert to fraction form
    9,138.50/13,711.30 = 3,590.86/x
  3. Step 3: Cross multiply
    9,138.50x = 13,711.30 × 3,590.86
  4. Step 4: Simplify right side
    9,138.50x = 49,235,358.72
  5. Step 5: Solve for x
    x = 49,235,358.72/9,138.50
  6. Step 6: Final answer
    x = 5,387.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.