Home / 2,712.16-4,066.88-1,931.72

Finding the Fourth Proportional to 2,712.16, 4,066.88 and 1,931.72

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Solution

The fourth proportional to 2,712.16, 4,066.88 and 1,931.72 is: 2,896.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.16 : 4,066.88 = 1,931.72 : x
  2. Step 2: Convert to fraction form
    2,712.16/4,066.88 = 1,931.72/x
  3. Step 3: Cross multiply
    2,712.16x = 4,066.88 × 1,931.72
  4. Step 4: Simplify right side
    2,712.16x = 7,856,073.43
  5. Step 5: Solve for x
    x = 7,856,073.43/2,712.16
  6. Step 6: Final answer
    x = 2,896.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.