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Finding the Fourth Proportional to 7,497.78, 10,348.20 and 4,355.79

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Solution

The fourth proportional to 7,497.78, 10,348.20 and 4,355.79 is: 6,011.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,497.78 : 10,348.20 = 4,355.79 : x
  2. Step 2: Convert to fraction form
    7,497.78/10,348.20 = 4,355.79/x
  3. Step 3: Cross multiply
    7,497.78x = 10,348.20 × 4,355.79
  4. Step 4: Simplify right side
    7,497.78x = 45,074,586.08
  5. Step 5: Solve for x
    x = 45,074,586.08/7,497.78
  6. Step 6: Final answer
    x = 6,011.72

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1.5x scale

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.