Home / 3,539.40-5,309.10-1,984.20

Finding the Fourth Proportional to 3,539.40, 5,309.10 and 1,984.20

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Solution

The fourth proportional to 3,539.40, 5,309.10 and 1,984.20 is: 2,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.40 : 5,309.10 = 1,984.20 : x
  2. Step 2: Convert to fraction form
    3,539.40/5,309.10 = 1,984.20/x
  3. Step 3: Cross multiply
    3,539.40x = 5,309.10 × 1,984.20
  4. Step 4: Simplify right side
    3,539.40x = 10,534,316.22
  5. Step 5: Solve for x
    x = 10,534,316.22/3,539.40
  6. Step 6: Final answer
    x = 2,976.30

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Similar ratio
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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.