Home / 3,549.20-5,320.20-2,087.60

Finding the Fourth Proportional to 3,549.20, 5,320.20 and 2,087.60

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Solution

The fourth proportional to 3,549.20, 5,320.20 and 2,087.60 is: 3,129.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,549.20 : 5,320.20 = 2,087.60 : x
  2. Step 2: Convert to fraction form
    3,549.20/5,320.20 = 2,087.60/x
  3. Step 3: Cross multiply
    3,549.20x = 5,320.20 × 2,087.60
  4. Step 4: Simplify right side
    3,549.20x = 11,106,449.52
  5. Step 5: Solve for x
    x = 11,106,449.52/3,549.20
  6. Step 6: Final answer
    x = 3,129.28

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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.