Home / 3,679.76-5,079.40-2,438.16

Finding the Fourth Proportional to 3,679.76, 5,079.40 and 2,438.16

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Solution

The fourth proportional to 3,679.76, 5,079.40 and 2,438.16 is: 3,365.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.76 : 5,079.40 = 2,438.16 : x
  2. Step 2: Convert to fraction form
    3,679.76/5,079.40 = 2,438.16/x
  3. Step 3: Cross multiply
    3,679.76x = 5,079.40 × 2,438.16
  4. Step 4: Simplify right side
    3,679.76x = 12,384,389.90
  5. Step 5: Solve for x
    x = 12,384,389.90/3,679.76
  6. Step 6: Final answer
    x = 3,365.54

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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.