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Finding the Fourth Proportional to 1,516.42, 2,091.95 and 886.97

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Solution

The fourth proportional to 1,516.42, 2,091.95 and 886.97 is: 1,223.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.42 : 2,091.95 = 886.97 : x
  2. Step 2: Convert to fraction form
    1,516.42/2,091.95 = 886.97/x
  3. Step 3: Cross multiply
    1,516.42x = 2,091.95 × 886.97
  4. Step 4: Simplify right side
    1,516.42x = 1,855,506.00
  5. Step 5: Solve for x
    x = 1,855,506.00/1,516.42
  6. Step 6: Final answer
    x = 1,223.61

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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.