Home / 5,515.52-7,611.28-3,031.52

Finding the Fourth Proportional to 5,515.52, 7,611.28 and 3,031.52

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Solution

The fourth proportional to 5,515.52, 7,611.28 and 3,031.52 is: 4,183.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.52 : 7,611.28 = 3,031.52 : x
  2. Step 2: Convert to fraction form
    5,515.52/7,611.28 = 3,031.52/x
  3. Step 3: Cross multiply
    5,515.52x = 7,611.28 × 3,031.52
  4. Step 4: Simplify right side
    5,515.52x = 23,073,747.55
  5. Step 5: Solve for x
    x = 23,073,747.55/5,515.52
  6. Step 6: Final answer
    x = 4,183.42

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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.