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Finding the Fourth Proportional to 5,155.15, 7,114.68 and 2,917.17

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Solution

The fourth proportional to 5,155.15, 7,114.68 and 2,917.17 is: 4,026.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.15 : 7,114.68 = 2,917.17 : x
  2. Step 2: Convert to fraction form
    5,155.15/7,114.68 = 2,917.17/x
  3. Step 3: Cross multiply
    5,155.15x = 7,114.68 × 2,917.17
  4. Step 4: Simplify right side
    5,155.15x = 20,754,733.78
  5. Step 5: Solve for x
    x = 20,754,733.78/5,155.15
  6. Step 6: Final answer
    x = 4,026.02

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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.