Home / 3,785.65-5,221.11-2,460.72

Finding the Fourth Proportional to 3,785.65, 5,221.11 and 2,460.72

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Solution

The fourth proportional to 3,785.65, 5,221.11 and 2,460.72 is: 3,393.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.65 : 5,221.11 = 2,460.72 : x
  2. Step 2: Convert to fraction form
    3,785.65/5,221.11 = 2,460.72/x
  3. Step 3: Cross multiply
    3,785.65x = 5,221.11 × 2,460.72
  4. Step 4: Simplify right side
    3,785.65x = 12,847,689.80
  5. Step 5: Solve for x
    x = 12,847,689.80/3,785.65
  6. Step 6: Final answer
    x = 3,393.79

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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.