Home / 5,156.92-7,116.56-2,799.07

Finding the Fourth Proportional to 5,156.92, 7,116.56 and 2,799.07

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Solution

The fourth proportional to 5,156.92, 7,116.56 and 2,799.07 is: 3,862.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.92 : 7,116.56 = 2,799.07 : x
  2. Step 2: Convert to fraction form
    5,156.92/7,116.56 = 2,799.07/x
  3. Step 3: Cross multiply
    5,156.92x = 7,116.56 × 2,799.07
  4. Step 4: Simplify right side
    5,156.92x = 19,919,735.60
  5. Step 5: Solve for x
    x = 19,919,735.60/5,156.92
  6. Step 6: Final answer
    x = 3,862.72

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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.