Home / 6,513.38-8,989.20-3,681.88

Finding the Fourth Proportional to 6,513.38, 8,989.20 and 3,681.88

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Solution

The fourth proportional to 6,513.38, 8,989.20 and 3,681.88 is: 5,081.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,513.38 : 8,989.20 = 3,681.88 : x
  2. Step 2: Convert to fraction form
    6,513.38/8,989.20 = 3,681.88/x
  3. Step 3: Cross multiply
    6,513.38x = 8,989.20 × 3,681.88
  4. Step 4: Simplify right side
    6,513.38x = 33,097,155.70
  5. Step 5: Solve for x
    x = 33,097,155.70/6,513.38
  6. Step 6: Final answer
    x = 5,081.41

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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.