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Finding the Fourth Proportional to 8,488.15, 11,710.99 and 4,902.65

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Solution

The fourth proportional to 8,488.15, 11,710.99 and 4,902.65 is: 6,764.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.15 : 11,710.99 = 4,902.65 : x
  2. Step 2: Convert to fraction form
    8,488.15/11,710.99 = 4,902.65/x
  3. Step 3: Cross multiply
    8,488.15x = 11,710.99 × 4,902.65
  4. Step 4: Simplify right side
    8,488.15x = 57,414,885.12
  5. Step 5: Solve for x
    x = 57,414,885.12/8,488.15
  6. Step 6: Final answer
    x = 6,764.12

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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.