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Finding the Fourth Proportional to 8,957.65, 13,421.51 and 6,320.79

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Solution

The fourth proportional to 8,957.65, 13,421.51 and 6,320.79 is: 9,470.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.65 : 13,421.51 = 6,320.79 : x
  2. Step 2: Convert to fraction form
    8,957.65/13,421.51 = 6,320.79/x
  3. Step 3: Cross multiply
    8,957.65x = 13,421.51 × 6,320.79
  4. Step 4: Simplify right side
    8,957.65x = 84,834,514.59
  5. Step 5: Solve for x
    x = 84,834,514.59/8,957.65
  6. Step 6: Final answer
    x = 9,470.63

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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.