Home / 3,000.80-4,501.20-1,538.75

Finding the Fourth Proportional to 3,000.80, 4,501.20 and 1,538.75

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Solution

The fourth proportional to 3,000.80, 4,501.20 and 1,538.75 is: 2,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000.80 : 4,501.20 = 1,538.75 : x
  2. Step 2: Convert to fraction form
    3,000.80/4,501.20 = 1,538.75/x
  3. Step 3: Cross multiply
    3,000.80x = 4,501.20 × 1,538.75
  4. Step 4: Simplify right side
    3,000.80x = 6,926,221.50
  5. Step 5: Solve for x
    x = 6,926,221.50/3,000.80
  6. Step 6: Final answer
    x = 2,308.13

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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.