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Finding the Fourth Proportional to 8,632.90, 12,939.56 and 7,590.89

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Solution

The fourth proportional to 8,632.90, 12,939.56 and 7,590.89 is: 11,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,632.90 : 12,939.56 = 7,590.89 : x
  2. Step 2: Convert to fraction form
    8,632.90/12,939.56 = 7,590.89/x
  3. Step 3: Cross multiply
    8,632.90x = 12,939.56 × 7,590.89
  4. Step 4: Simplify right side
    8,632.90x = 98,222,776.61
  5. Step 5: Solve for x
    x = 98,222,776.61/8,632.90
  6. Step 6: Final answer
    x = 11,377.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.