Home / 3,686.30-5,081.16-2,490.90

Finding the Fourth Proportional to 3,686.30, 5,081.16 and 2,490.90

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Solution

The fourth proportional to 3,686.30, 5,081.16 and 2,490.90 is: 3,433.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.30 : 5,081.16 = 2,490.90 : x
  2. Step 2: Convert to fraction form
    3,686.30/5,081.16 = 2,490.90/x
  3. Step 3: Cross multiply
    3,686.30x = 5,081.16 × 2,490.90
  4. Step 4: Simplify right side
    3,686.30x = 12,656,661.44
  5. Step 5: Solve for x
    x = 12,656,661.44/3,686.30
  6. Step 6: Final answer
    x = 3,433.43

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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.