Home / 8,428.40-11,631.17-4,651.79

Finding the Fourth Proportional to 8,428.40, 11,631.17 and 4,651.79

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Solution

The fourth proportional to 8,428.40, 11,631.17 and 4,651.79 is: 6,419.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.40 : 11,631.17 = 4,651.79 : x
  2. Step 2: Convert to fraction form
    8,428.40/11,631.17 = 4,651.79/x
  3. Step 3: Cross multiply
    8,428.40x = 11,631.17 × 4,651.79
  4. Step 4: Simplify right side
    8,428.40x = 54,105,737.04
  5. Step 5: Solve for x
    x = 54,105,737.04/8,428.40
  6. Step 6: Final answer
    x = 6,419.46

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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.