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Finding the Fourth Proportional to 7,939.76, 10,957.02 and 4,403.30

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Solution

The fourth proportional to 7,939.76, 10,957.02 and 4,403.30 is: 6,076.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.76 : 10,957.02 = 4,403.30 : x
  2. Step 2: Convert to fraction form
    7,939.76/10,957.02 = 4,403.30/x
  3. Step 3: Cross multiply
    7,939.76x = 10,957.02 × 4,403.30
  4. Step 4: Simplify right side
    7,939.76x = 48,247,046.17
  5. Step 5: Solve for x
    x = 48,247,046.17/7,939.76
  6. Step 6: Final answer
    x = 6,076.64

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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.