Home / 2,687.12-3,708.20-1,508.16

Finding the Fourth Proportional to 2,687.12, 3,708.20 and 1,508.16

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Solution

The fourth proportional to 2,687.12, 3,708.20 and 1,508.16 is: 2,081.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.12 : 3,708.20 = 1,508.16 : x
  2. Step 2: Convert to fraction form
    2,687.12/3,708.20 = 1,508.16/x
  3. Step 3: Cross multiply
    2,687.12x = 3,708.20 × 1,508.16
  4. Step 4: Simplify right side
    2,687.12x = 5,592,558.91
  5. Step 5: Solve for x
    x = 5,592,558.91/2,687.12
  6. Step 6: Final answer
    x = 2,081.25

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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.