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Finding the Fourth Proportional to 8,898.50, 12,265.80 and 7,007.09

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Solution

The fourth proportional to 8,898.50, 12,265.80 and 7,007.09 is: 9,658.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.50 : 12,265.80 = 7,007.09 : x
  2. Step 2: Convert to fraction form
    8,898.50/12,265.80 = 7,007.09/x
  3. Step 3: Cross multiply
    8,898.50x = 12,265.80 × 7,007.09
  4. Step 4: Simplify right side
    8,898.50x = 85,947,476.92
  5. Step 5: Solve for x
    x = 85,947,476.92/8,898.50
  6. Step 6: Final answer
    x = 9,658.65

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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.