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Finding the Fourth Proportional to 2,642.16, 3,642.42 and 1,895.88

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Solution

The fourth proportional to 2,642.16, 3,642.42 and 1,895.88 is: 2,613.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.16 : 3,642.42 = 1,895.88 : x
  2. Step 2: Convert to fraction form
    2,642.16/3,642.42 = 1,895.88/x
  3. Step 3: Cross multiply
    2,642.16x = 3,642.42 × 1,895.88
  4. Step 4: Simplify right side
    2,642.16x = 6,905,601.33
  5. Step 5: Solve for x
    x = 6,905,601.33/2,642.16
  6. Step 6: Final answer
    x = 2,613.62

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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.