Home / 3,708.18-5,115.96-2,381.40

Finding the Fourth Proportional to 3,708.18, 5,115.96 and 2,381.40

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Solution

The fourth proportional to 3,708.18, 5,115.96 and 2,381.40 is: 3,285.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.18 : 5,115.96 = 2,381.40 : x
  2. Step 2: Convert to fraction form
    3,708.18/5,115.96 = 2,381.40/x
  3. Step 3: Cross multiply
    3,708.18x = 5,115.96 × 2,381.40
  4. Step 4: Simplify right side
    3,708.18x = 12,183,147.14
  5. Step 5: Solve for x
    x = 12,183,147.14/3,708.18
  6. Step 6: Final answer
    x = 3,285.48

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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.