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Finding the Fourth Proportional to 8,890.02, 12,179.16 and 8,557.65

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Solution

The fourth proportional to 8,890.02, 12,179.16 and 8,557.65 is: 11,723.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890.02 : 12,179.16 = 8,557.65 : x
  2. Step 2: Convert to fraction form
    8,890.02/12,179.16 = 8,557.65/x
  3. Step 3: Cross multiply
    8,890.02x = 12,179.16 × 8,557.65
  4. Step 4: Simplify right side
    8,890.02x = 104,224,988.57
  5. Step 5: Solve for x
    x = 104,224,988.57/8,890.02
  6. Step 6: Final answer
    x = 11,723.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.