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Finding the Fourth Proportional to 8,630.48, 12,933.18 and 4,678.38

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Solution

The fourth proportional to 8,630.48, 12,933.18 and 4,678.38 is: 7,010.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.48 : 12,933.18 = 4,678.38 : x
  2. Step 2: Convert to fraction form
    8,630.48/12,933.18 = 4,678.38/x
  3. Step 3: Cross multiply
    8,630.48x = 12,933.18 × 4,678.38
  4. Step 4: Simplify right side
    8,630.48x = 60,506,330.65
  5. Step 5: Solve for x
    x = 60,506,330.65/8,630.48
  6. Step 6: Final answer
    x = 7,010.77

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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.