Home / 5,518.88-7,615.20-3,531.20

Finding the Fourth Proportional to 5,518.88, 7,615.20 and 3,531.20

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Solution

The fourth proportional to 5,518.88, 7,615.20 and 3,531.20 is: 4,872.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.88 : 7,615.20 = 3,531.20 : x
  2. Step 2: Convert to fraction form
    5,518.88/7,615.20 = 3,531.20/x
  3. Step 3: Cross multiply
    5,518.88x = 7,615.20 × 3,531.20
  4. Step 4: Simplify right side
    5,518.88x = 26,890,794.24
  5. Step 5: Solve for x
    x = 26,890,794.24/5,518.88
  6. Step 6: Final answer
    x = 4,872.51

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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.