Home / 5,154.28-7,112.92-2,796.40

Finding the Fourth Proportional to 5,154.28, 7,112.92 and 2,796.40

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Solution

The fourth proportional to 5,154.28, 7,112.92 and 2,796.40 is: 3,859.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,154.28 : 7,112.92 = 2,796.40 : x
  2. Step 2: Convert to fraction form
    5,154.28/7,112.92 = 2,796.40/x
  3. Step 3: Cross multiply
    5,154.28x = 7,112.92 × 2,796.40
  4. Step 4: Simplify right side
    5,154.28x = 19,890,569.49
  5. Step 5: Solve for x
    x = 19,890,569.49/5,154.28
  6. Step 6: Final answer
    x = 3,859.04

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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.