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Finding the Fourth Proportional to 3,959.40, 5,939.10 and 1,650.90

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Solution

The fourth proportional to 3,959.40, 5,939.10 and 1,650.90 is: 2,476.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.40 : 5,939.10 = 1,650.90 : x
  2. Step 2: Convert to fraction form
    3,959.40/5,939.10 = 1,650.90/x
  3. Step 3: Cross multiply
    3,959.40x = 5,939.10 × 1,650.90
  4. Step 4: Simplify right side
    3,959.40x = 9,804,860.19
  5. Step 5: Solve for x
    x = 9,804,860.19/3,959.40
  6. Step 6: Final answer
    x = 2,476.35

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Similar ratio
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1.5x scale

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.