Home / 5,157.31-7,117.17-2,799.45

Finding the Fourth Proportional to 5,157.31, 7,117.17 and 2,799.45

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Solution

The fourth proportional to 5,157.31, 7,117.17 and 2,799.45 is: 3,863.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.31 : 7,117.17 = 2,799.45 : x
  2. Step 2: Convert to fraction form
    5,157.31/7,117.17 = 2,799.45/x
  3. Step 3: Cross multiply
    5,157.31x = 7,117.17 × 2,799.45
  4. Step 4: Simplify right side
    5,157.31x = 19,924,125.97
  5. Step 5: Solve for x
    x = 19,924,125.97/5,157.31
  6. Step 6: Final answer
    x = 3,863.28

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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.