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Finding the Fourth Proportional to 5,155.25, 7,114.43 and 2,917.22

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Solution

The fourth proportional to 5,155.25, 7,114.43 and 2,917.22 is: 4,025.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.25 : 7,114.43 = 2,917.22 : x
  2. Step 2: Convert to fraction form
    5,155.25/7,114.43 = 2,917.22/x
  3. Step 3: Cross multiply
    5,155.25x = 7,114.43 × 2,917.22
  4. Step 4: Simplify right side
    5,155.25x = 20,754,329.21
  5. Step 5: Solve for x
    x = 20,754,329.21/5,155.25
  6. Step 6: Final answer
    x = 4,025.87

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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.