Home / 3,920.18-5,409.69-2,349.14

Finding the Fourth Proportional to 3,920.18, 5,409.69 and 2,349.14

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Solution

The fourth proportional to 3,920.18, 5,409.69 and 2,349.14 is: 3,241.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.18 : 5,409.69 = 2,349.14 : x
  2. Step 2: Convert to fraction form
    3,920.18/5,409.69 = 2,349.14/x
  3. Step 3: Cross multiply
    3,920.18x = 5,409.69 × 2,349.14
  4. Step 4: Simplify right side
    3,920.18x = 12,708,119.17
  5. Step 5: Solve for x
    x = 12,708,119.17/3,920.18
  6. Step 6: Final answer
    x = 3,241.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.