Home / 7,379.20-10,162.56-7,217.92

Finding the Fourth Proportional to 7,379.20, 10,162.56 and 7,217.92

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Solution

The fourth proportional to 7,379.20, 10,162.56 and 7,217.92 is: 9,940.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,379.20 : 10,162.56 = 7,217.92 : x
  2. Step 2: Convert to fraction form
    7,379.20/10,162.56 = 7,217.92/x
  3. Step 3: Cross multiply
    7,379.20x = 10,162.56 × 7,217.92
  4. Step 4: Simplify right side
    7,379.20x = 73,352,545.08
  5. Step 5: Solve for x
    x = 73,352,545.08/7,379.20
  6. Step 6: Final answer
    x = 9,940.45

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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.