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Finding the Fourth Proportional to 5,170.11, 7,134.98 and 2,931.98

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Solution

The fourth proportional to 5,170.11, 7,134.98 and 2,931.98 is: 4,046.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.11 : 7,134.98 = 2,931.98 : x
  2. Step 2: Convert to fraction form
    5,170.11/7,134.98 = 2,931.98/x
  3. Step 3: Cross multiply
    5,170.11x = 7,134.98 × 2,931.98
  4. Step 4: Simplify right side
    5,170.11x = 20,919,568.33
  5. Step 5: Solve for x
    x = 20,919,568.33/5,170.11
  6. Step 6: Final answer
    x = 4,046.25

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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.