Home / 2,280.25-3,420.38-1,305.68

Finding the Fourth Proportional to 2,280.25, 3,420.38 and 1,305.68

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Solution

The fourth proportional to 2,280.25, 3,420.38 and 1,305.68 is: 1,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.25 : 3,420.38 = 1,305.68 : x
  2. Step 2: Convert to fraction form
    2,280.25/3,420.38 = 1,305.68/x
  3. Step 3: Cross multiply
    2,280.25x = 3,420.38 × 1,305.68
  4. Step 4: Simplify right side
    2,280.25x = 4,465,921.76
  5. Step 5: Solve for x
    x = 4,465,921.76/2,280.25
  6. Step 6: Final answer
    x = 1,958.52

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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.