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Finding the Fourth Proportional to 7,474.88, 10,315.34 and 4,332.89

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Solution

The fourth proportional to 7,474.88, 10,315.34 and 4,332.89 is: 5,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,474.88 : 10,315.34 = 4,332.89 : x
  2. Step 2: Convert to fraction form
    7,474.88/10,315.34 = 4,332.89/x
  3. Step 3: Cross multiply
    7,474.88x = 10,315.34 × 4,332.89
  4. Step 4: Simplify right side
    7,474.88x = 44,695,160.29
  5. Step 5: Solve for x
    x = 44,695,160.29/7,474.88
  6. Step 6: Final answer
    x = 5,979.39

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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.