Home / 6,431.40-8,873.01-3,912.71

Finding the Fourth Proportional to 6,431.40, 8,873.01 and 3,912.71

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Solution

The fourth proportional to 6,431.40, 8,873.01 and 3,912.71 is: 5,398.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.40 : 8,873.01 = 3,912.71 : x
  2. Step 2: Convert to fraction form
    6,431.40/8,873.01 = 3,912.71/x
  3. Step 3: Cross multiply
    6,431.40x = 8,873.01 × 3,912.71
  4. Step 4: Simplify right side
    6,431.40x = 34,717,470.59
  5. Step 5: Solve for x
    x = 34,717,470.59/6,431.40
  6. Step 6: Final answer
    x = 5,398.12

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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.