Home / 2,069.20-3,103.80-1,247.05

Finding the Fourth Proportional to 2,069.20, 3,103.80 and 1,247.05

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Solution

The fourth proportional to 2,069.20, 3,103.80 and 1,247.05 is: 1,870.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069.20 : 3,103.80 = 1,247.05 : x
  2. Step 2: Convert to fraction form
    2,069.20/3,103.80 = 1,247.05/x
  3. Step 3: Cross multiply
    2,069.20x = 3,103.80 × 1,247.05
  4. Step 4: Simplify right side
    2,069.20x = 3,870,593.79
  5. Step 5: Solve for x
    x = 3,870,593.79/2,069.20
  6. Step 6: Final answer
    x = 1,870.58

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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.