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Finding the Fourth Proportional to 7,347.78, 10,959.64 and 6,239.70

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Solution

The fourth proportional to 7,347.78, 10,959.64 and 6,239.70 is: 9,306.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,347.78 : 10,959.64 = 6,239.70 : x
  2. Step 2: Convert to fraction form
    7,347.78/10,959.64 = 6,239.70/x
  3. Step 3: Cross multiply
    7,347.78x = 10,959.64 × 6,239.70
  4. Step 4: Simplify right side
    7,347.78x = 68,384,850.11
  5. Step 5: Solve for x
    x = 68,384,850.11/7,347.78
  6. Step 6: Final answer
    x = 9,306.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.