Home / 7,545.20-10,390.40-7,063.86

Finding the Fourth Proportional to 7,545.20, 10,390.40 and 7,063.86

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Solution

The fourth proportional to 7,545.20, 10,390.40 and 7,063.86 is: 9,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,545.20 : 10,390.40 = 7,063.86 : x
  2. Step 2: Convert to fraction form
    7,545.20/10,390.40 = 7,063.86/x
  3. Step 3: Cross multiply
    7,545.20x = 10,390.40 × 7,063.86
  4. Step 4: Simplify right side
    7,545.20x = 73,396,330.94
  5. Step 5: Solve for x
    x = 73,396,330.94/7,545.20
  6. Step 6: Final answer
    x = 9,727.55

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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.