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Finding the Fourth Proportional to 5,155.67, 7,114.95 and 2,917.64

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Solution

The fourth proportional to 5,155.67, 7,114.95 and 2,917.64 is: 4,026.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.67 : 7,114.95 = 2,917.64 : x
  2. Step 2: Convert to fraction form
    5,155.67/7,114.95 = 2,917.64/x
  3. Step 3: Cross multiply
    5,155.67x = 7,114.95 × 2,917.64
  4. Step 4: Simplify right side
    5,155.67x = 20,758,827.14
  5. Step 5: Solve for x
    x = 20,758,827.14/5,155.67
  6. Step 6: Final answer
    x = 4,026.41

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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.