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Finding the Fourth Proportional to 8,666.58, 11,957.16 and 5,305.89

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Solution

The fourth proportional to 8,666.58, 11,957.16 and 5,305.89 is: 7,320.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.58 : 11,957.16 = 5,305.89 : x
  2. Step 2: Convert to fraction form
    8,666.58/11,957.16 = 5,305.89/x
  3. Step 3: Cross multiply
    8,666.58x = 11,957.16 × 5,305.89
  4. Step 4: Simplify right side
    8,666.58x = 63,443,375.67
  5. Step 5: Solve for x
    x = 63,443,375.67/8,666.58
  6. Step 6: Final answer
    x = 7,320.46

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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.