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Finding the Fourth Proportional to 4,259.39, 5,879.39 and 2,915.80

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Solution

The fourth proportional to 4,259.39, 5,879.39 and 2,915.80 is: 4,024.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,259.39 : 5,879.39 = 2,915.80 : x
  2. Step 2: Convert to fraction form
    4,259.39/5,879.39 = 2,915.80/x
  3. Step 3: Cross multiply
    4,259.39x = 5,879.39 × 2,915.80
  4. Step 4: Simplify right side
    4,259.39x = 17,143,096.08
  5. Step 5: Solve for x
    x = 17,143,096.08/4,259.39
  6. Step 6: Final answer
    x = 4,024.78

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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.