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Finding the Fourth Proportional to 3,959.67, 5,937.31 and 1,621.32

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Solution

The fourth proportional to 3,959.67, 5,937.31 and 1,621.32 is: 2,431.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.67 : 5,937.31 = 1,621.32 : x
  2. Step 2: Convert to fraction form
    3,959.67/5,937.31 = 1,621.32/x
  3. Step 3: Cross multiply
    3,959.67x = 5,937.31 × 1,621.32
  4. Step 4: Simplify right side
    3,959.67x = 9,626,279.45
  5. Step 5: Solve for x
    x = 9,626,279.45/3,959.67
  6. Step 6: Final answer
    x = 2,431.08

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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.