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Finding the Fourth Proportional to 8,697.53, 12,002.57 and 5,163.65

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Solution

The fourth proportional to 8,697.53, 12,002.57 and 5,163.65 is: 7,125.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,697.53 : 12,002.57 = 5,163.65 : x
  2. Step 2: Convert to fraction form
    8,697.53/12,002.57 = 5,163.65/x
  3. Step 3: Cross multiply
    8,697.53x = 12,002.57 × 5,163.65
  4. Step 4: Simplify right side
    8,697.53x = 61,977,044.76
  5. Step 5: Solve for x
    x = 61,977,044.76/8,697.53
  6. Step 6: Final answer
    x = 7,125.82

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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.