Home / 2,687.20-3,707.96-1,508.32

Finding the Fourth Proportional to 2,687.20, 3,707.96 and 1,508.32

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Solution

The fourth proportional to 2,687.20, 3,707.96 and 1,508.32 is: 2,081.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.20 : 3,707.96 = 1,508.32 : x
  2. Step 2: Convert to fraction form
    2,687.20/3,707.96 = 1,508.32/x
  3. Step 3: Cross multiply
    2,687.20x = 3,707.96 × 1,508.32
  4. Step 4: Simplify right side
    2,687.20x = 5,592,790.23
  5. Step 5: Solve for x
    x = 5,592,790.23/2,687.20
  6. Step 6: Final answer
    x = 2,081.27

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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.