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Finding the Fourth Proportional to 3,515.84, 5,272.84 and 1,325.24

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Solution

The fourth proportional to 3,515.84, 5,272.84 and 1,325.24 is: 1,987.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.84 : 5,272.84 = 1,325.24 : x
  2. Step 2: Convert to fraction form
    3,515.84/5,272.84 = 1,325.24/x
  3. Step 3: Cross multiply
    3,515.84x = 5,272.84 × 1,325.24
  4. Step 4: Simplify right side
    3,515.84x = 6,987,778.48
  5. Step 5: Solve for x
    x = 6,987,778.48/3,515.84
  6. Step 6: Final answer
    x = 1,987.51

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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.