Home / 8,449.31-11,660.15-4,672.79

Finding the Fourth Proportional to 8,449.31, 11,660.15 and 4,672.79

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Solution

The fourth proportional to 8,449.31, 11,660.15 and 4,672.79 is: 6,448.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.31 : 11,660.15 = 4,672.79 : x
  2. Step 2: Convert to fraction form
    8,449.31/11,660.15 = 4,672.79/x
  3. Step 3: Cross multiply
    8,449.31x = 11,660.15 × 4,672.79
  4. Step 4: Simplify right side
    8,449.31x = 54,485,429.43
  5. Step 5: Solve for x
    x = 54,485,429.43/8,449.31
  6. Step 6: Final answer
    x = 6,448.50

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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.