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Finding the Fourth Proportional to 5,155.95, 7,114.92 and 2,917.92

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Solution

The fourth proportional to 5,155.95, 7,114.92 and 2,917.92 is: 4,026.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.95 : 7,114.92 = 2,917.92 : x
  2. Step 2: Convert to fraction form
    5,155.95/7,114.92 = 2,917.92/x
  3. Step 3: Cross multiply
    5,155.95x = 7,114.92 × 2,917.92
  4. Step 4: Simplify right side
    5,155.95x = 20,760,767.37
  5. Step 5: Solve for x
    x = 20,760,767.37/5,155.95
  6. Step 6: Final answer
    x = 4,026.56

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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.