Home / 3,779.57-5,215.91-2,287.76

Finding the Fourth Proportional to 3,779.57, 5,215.91 and 2,287.76

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Solution

The fourth proportional to 3,779.57, 5,215.91 and 2,287.76 is: 3,157.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.57 : 5,215.91 = 2,287.76 : x
  2. Step 2: Convert to fraction form
    3,779.57/5,215.91 = 2,287.76/x
  3. Step 3: Cross multiply
    3,779.57x = 5,215.91 × 2,287.76
  4. Step 4: Simplify right side
    3,779.57x = 11,932,729.90
  5. Step 5: Solve for x
    x = 11,932,729.90/3,779.57
  6. Step 6: Final answer
    x = 3,157.17

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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.