Home / 5,131.38-7,656.78-4,817.91

Finding the Fourth Proportional to 5,131.38, 7,656.78 and 4,817.91

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Solution

The fourth proportional to 5,131.38, 7,656.78 and 4,817.91 is: 7,189.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.38 : 7,656.78 = 4,817.91 : x
  2. Step 2: Convert to fraction form
    5,131.38/7,656.78 = 4,817.91/x
  3. Step 3: Cross multiply
    5,131.38x = 7,656.78 × 4,817.91
  4. Step 4: Simplify right side
    5,131.38x = 36,889,676.93
  5. Step 5: Solve for x
    x = 36,889,676.93/5,131.38
  6. Step 6: Final answer
    x = 7,189.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.