Home / 5,155.11-7,113.87-2,797.20

Finding the Fourth Proportional to 5,155.11, 7,113.87 and 2,797.20

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Solution

The fourth proportional to 5,155.11, 7,113.87 and 2,797.20 is: 3,860.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.11 : 7,113.87 = 2,797.20 : x
  2. Step 2: Convert to fraction form
    5,155.11/7,113.87 = 2,797.20/x
  3. Step 3: Cross multiply
    5,155.11x = 7,113.87 × 2,797.20
  4. Step 4: Simplify right side
    5,155.11x = 19,898,917.16
  5. Step 5: Solve for x
    x = 19,898,917.16/5,155.11
  6. Step 6: Final answer
    x = 3,860.04

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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.