Home / 5,451.20-7,520.14-3,211.55

Finding the Fourth Proportional to 5,451.20, 7,520.14 and 3,211.55

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Solution

The fourth proportional to 5,451.20, 7,520.14 and 3,211.55 is: 4,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.20 : 7,520.14 = 3,211.55 : x
  2. Step 2: Convert to fraction form
    5,451.20/7,520.14 = 3,211.55/x
  3. Step 3: Cross multiply
    5,451.20x = 7,520.14 × 3,211.55
  4. Step 4: Simplify right side
    5,451.20x = 24,151,300.23
  5. Step 5: Solve for x
    x = 24,151,300.23/5,451.20
  6. Step 6: Final answer
    x = 4,430.46

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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.