Home / 5,157.16-7,116.66-2,799.20

Finding the Fourth Proportional to 5,157.16, 7,116.66 and 2,799.20

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Solution

The fourth proportional to 5,157.16, 7,116.66 and 2,799.20 is: 3,862.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.16 : 7,116.66 = 2,799.20 : x
  2. Step 2: Convert to fraction form
    5,157.16/7,116.66 = 2,799.20/x
  3. Step 3: Cross multiply
    5,157.16x = 7,116.66 × 2,799.20
  4. Step 4: Simplify right side
    5,157.16x = 19,920,954.67
  5. Step 5: Solve for x
    x = 19,920,954.67/5,157.16
  6. Step 6: Final answer
    x = 3,862.78

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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.