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Finding the Fourth Proportional to 3,525.87, 5,294.87 and 3,131.45

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Solution

The fourth proportional to 3,525.87, 5,294.87 and 3,131.45 is: 4,702.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,525.87 : 5,294.87 = 3,131.45 : x
  2. Step 2: Convert to fraction form
    3,525.87/5,294.87 = 3,131.45/x
  3. Step 3: Cross multiply
    3,525.87x = 5,294.87 × 3,131.45
  4. Step 4: Simplify right side
    3,525.87x = 16,580,578.53
  5. Step 5: Solve for x
    x = 16,580,578.53/3,525.87
  6. Step 6: Final answer
    x = 4,702.55

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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.