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Finding the Fourth Proportional to 8,834.30, 13,251.45 and 8,402.30

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Solution

The fourth proportional to 8,834.30, 13,251.45 and 8,402.30 is: 12,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,834.30 : 13,251.45 = 8,402.30 : x
  2. Step 2: Convert to fraction form
    8,834.30/13,251.45 = 8,402.30/x
  3. Step 3: Cross multiply
    8,834.30x = 13,251.45 × 8,402.30
  4. Step 4: Simplify right side
    8,834.30x = 111,342,658.34
  5. Step 5: Solve for x
    x = 111,342,658.34/8,834.30
  6. Step 6: Final answer
    x = 12,603.45

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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.