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Finding the Fourth Proportional to 5,423.96, 7,485.04 and 2,939.96

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Solution

The fourth proportional to 5,423.96, 7,485.04 and 2,939.96 is: 4,057.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.96 : 7,485.04 = 2,939.96 : x
  2. Step 2: Convert to fraction form
    5,423.96/7,485.04 = 2,939.96/x
  3. Step 3: Cross multiply
    5,423.96x = 7,485.04 × 2,939.96
  4. Step 4: Simplify right side
    5,423.96x = 22,005,718.20
  5. Step 5: Solve for x
    x = 22,005,718.20/5,423.96
  6. Step 6: Final answer
    x = 4,057.13

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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.