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Finding the Fourth Proportional to 7,122.96, 10,688.88 and 7,064.24

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Solution

The fourth proportional to 7,122.96, 10,688.88 and 7,064.24 is: 10,600.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.96 : 10,688.88 = 7,064.24 : x
  2. Step 2: Convert to fraction form
    7,122.96/10,688.88 = 7,064.24/x
  3. Step 3: Cross multiply
    7,122.96x = 10,688.88 × 7,064.24
  4. Step 4: Simplify right side
    7,122.96x = 75,508,813.65
  5. Step 5: Solve for x
    x = 75,508,813.65/7,122.96
  6. Step 6: Final answer
    x = 10,600.76

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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.