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Finding the Fourth Proportional to 2,917.04, 4,375.60 and 865.04

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Solution

The fourth proportional to 2,917.04, 4,375.60 and 865.04 is: 1,297.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.04 : 4,375.60 = 865.04 : x
  2. Step 2: Convert to fraction form
    2,917.04/4,375.60 = 865.04/x
  3. Step 3: Cross multiply
    2,917.04x = 4,375.60 × 865.04
  4. Step 4: Simplify right side
    2,917.04x = 3,785,069.02
  5. Step 5: Solve for x
    x = 3,785,069.02/2,917.04
  6. Step 6: Final answer
    x = 1,297.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.