Home / 8,423.71-12,631.87-3,155.03

Finding the Fourth Proportional to 8,423.71, 12,631.87 and 3,155.03

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Solution

The fourth proportional to 8,423.71, 12,631.87 and 3,155.03 is: 4,731.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.71 : 12,631.87 = 3,155.03 : x
  2. Step 2: Convert to fraction form
    8,423.71/12,631.87 = 3,155.03/x
  3. Step 3: Cross multiply
    8,423.71x = 12,631.87 × 3,155.03
  4. Step 4: Simplify right side
    8,423.71x = 39,853,928.81
  5. Step 5: Solve for x
    x = 39,853,928.81/8,423.71
  6. Step 6: Final answer
    x = 4,731.16

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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.