Home / 5,489.20-8,233.80-1,385.20

Finding the Fourth Proportional to 5,489.20, 8,233.80 and 1,385.20

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Solution

The fourth proportional to 5,489.20, 8,233.80 and 1,385.20 is: 2,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,489.20 : 8,233.80 = 1,385.20 : x
  2. Step 2: Convert to fraction form
    5,489.20/8,233.80 = 1,385.20/x
  3. Step 3: Cross multiply
    5,489.20x = 8,233.80 × 1,385.20
  4. Step 4: Simplify right side
    5,489.20x = 11,405,459.76
  5. Step 5: Solve for x
    x = 11,405,459.76/5,489.20
  6. Step 6: Final answer
    x = 2,077.80

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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.