Home / 3,639.85-5,459.78-2,408.65

Finding the Fourth Proportional to 3,639.85, 5,459.78 and 2,408.65

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Solution

The fourth proportional to 3,639.85, 5,459.78 and 2,408.65 is: 3,612.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.85 : 5,459.78 = 2,408.65 : x
  2. Step 2: Convert to fraction form
    3,639.85/5,459.78 = 2,408.65/x
  3. Step 3: Cross multiply
    3,639.85x = 5,459.78 × 2,408.65
  4. Step 4: Simplify right side
    3,639.85x = 13,150,687.05
  5. Step 5: Solve for x
    x = 13,150,687.05/3,639.85
  6. Step 6: Final answer
    x = 3,612.98

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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.