Home / 3,785.29-5,221.11-2,290.63

Finding the Fourth Proportional to 3,785.29, 5,221.11 and 2,290.63

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Solution

The fourth proportional to 3,785.29, 5,221.11 and 2,290.63 is: 3,159.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.29 : 5,221.11 = 2,290.63 : x
  2. Step 2: Convert to fraction form
    3,785.29/5,221.11 = 2,290.63/x
  3. Step 3: Cross multiply
    3,785.29x = 5,221.11 × 2,290.63
  4. Step 4: Simplify right side
    3,785.29x = 11,959,631.20
  5. Step 5: Solve for x
    x = 11,959,631.20/3,785.29
  6. Step 6: Final answer
    x = 3,159.50

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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.