Home / 7,447.31-10,251.54-6,438.56

Finding the Fourth Proportional to 7,447.31, 10,251.54 and 6,438.56

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Solution

The fourth proportional to 7,447.31, 10,251.54 and 6,438.56 is: 8,862.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.31 : 10,251.54 = 6,438.56 : x
  2. Step 2: Convert to fraction form
    7,447.31/10,251.54 = 6,438.56/x
  3. Step 3: Cross multiply
    7,447.31x = 10,251.54 × 6,438.56
  4. Step 4: Simplify right side
    7,447.31x = 66,005,104.12
  5. Step 5: Solve for x
    x = 66,005,104.12/7,447.31
  6. Step 6: Final answer
    x = 8,862.95

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1.5x scale

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.