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Finding the Fourth Proportional to 8,898.88, 12,280.54 and 4,865.82

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Solution

The fourth proportional to 8,898.88, 12,280.54 and 4,865.82 is: 6,714.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.88 : 12,280.54 = 4,865.82 : x
  2. Step 2: Convert to fraction form
    8,898.88/12,280.54 = 4,865.82/x
  3. Step 3: Cross multiply
    8,898.88x = 12,280.54 × 4,865.82
  4. Step 4: Simplify right side
    8,898.88x = 59,754,897.14
  5. Step 5: Solve for x
    x = 59,754,897.14/8,898.88
  6. Step 6: Final answer
    x = 6,714.88

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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.