Home / 5,170.50-7,135.29-2,931.66

Finding the Fourth Proportional to 5,170.50, 7,135.29 and 2,931.66

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Solution

The fourth proportional to 5,170.50, 7,135.29 and 2,931.66 is: 4,045.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.50 : 7,135.29 = 2,931.66 : x
  2. Step 2: Convert to fraction form
    5,170.50/7,135.29 = 2,931.66/x
  3. Step 3: Cross multiply
    5,170.50x = 7,135.29 × 2,931.66
  4. Step 4: Simplify right side
    5,170.50x = 20,918,244.28
  5. Step 5: Solve for x
    x = 20,918,244.28/5,170.50
  6. Step 6: Final answer
    x = 4,045.69

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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.