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Finding the Fourth Proportional to 3,240.88, 4,472.42 and 1,897.41

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Solution

The fourth proportional to 3,240.88, 4,472.42 and 1,897.41 is: 2,618.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.88 : 4,472.42 = 1,897.41 : x
  2. Step 2: Convert to fraction form
    3,240.88/4,472.42 = 1,897.41/x
  3. Step 3: Cross multiply
    3,240.88x = 4,472.42 × 1,897.41
  4. Step 4: Simplify right side
    3,240.88x = 8,486,004.95
  5. Step 5: Solve for x
    x = 8,486,004.95/3,240.88
  6. Step 6: Final answer
    x = 2,618.43

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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.