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Finding the Fourth Proportional to 3,888.63, 5,344.19 and 3,642.59

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Solution

The fourth proportional to 3,888.63, 5,344.19 and 3,642.59 is: 5,006.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.63 : 5,344.19 = 3,642.59 : x
  2. Step 2: Convert to fraction form
    3,888.63/5,344.19 = 3,642.59/x
  3. Step 3: Cross multiply
    3,888.63x = 5,344.19 × 3,642.59
  4. Step 4: Simplify right side
    3,888.63x = 19,466,648.12
  5. Step 5: Solve for x
    x = 19,466,648.12/3,888.63
  6. Step 6: Final answer
    x = 5,006.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.