Home / 5,170.75-7,135.10-2,931.91

Finding the Fourth Proportional to 5,170.75, 7,135.10 and 2,931.91

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Solution

The fourth proportional to 5,170.75, 7,135.10 and 2,931.91 is: 4,045.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.75 : 7,135.10 = 2,931.91 : x
  2. Step 2: Convert to fraction form
    5,170.75/7,135.10 = 2,931.91/x
  3. Step 3: Cross multiply
    5,170.75x = 7,135.10 × 2,931.91
  4. Step 4: Simplify right side
    5,170.75x = 20,919,456.38
  5. Step 5: Solve for x
    x = 20,919,456.38/5,170.75
  6. Step 6: Final answer
    x = 4,045.73

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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.