Home / 2,639.64-3,959.47-1,471.42

Finding the Fourth Proportional to 2,639.64, 3,959.47 and 1,471.42

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Solution

The fourth proportional to 2,639.64, 3,959.47 and 1,471.42 is: 2,207.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.64 : 3,959.47 = 1,471.42 : x
  2. Step 2: Convert to fraction form
    2,639.64/3,959.47 = 1,471.42/x
  3. Step 3: Cross multiply
    2,639.64x = 3,959.47 × 1,471.42
  4. Step 4: Simplify right side
    2,639.64x = 5,826,023.55
  5. Step 5: Solve for x
    x = 5,826,023.55/2,639.64
  6. Step 6: Final answer
    x = 2,207.13

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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.