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Finding the Fourth Proportional to 3,959.72, 5,939.35 and 1,038.02

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Solution

The fourth proportional to 3,959.72, 5,939.35 and 1,038.02 is: 1,556.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.72 : 5,939.35 = 1,038.02 : x
  2. Step 2: Convert to fraction form
    3,959.72/5,939.35 = 1,038.02/x
  3. Step 3: Cross multiply
    3,959.72x = 5,939.35 × 1,038.02
  4. Step 4: Simplify right side
    3,959.72x = 6,165,165.20
  5. Step 5: Solve for x
    x = 6,165,165.20/3,959.72
  6. Step 6: Final answer
    x = 1,556.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.