Home / 5,681.22-8,512.38-1,981.41

Finding the Fourth Proportional to 5,681.22, 8,512.38 and 1,981.41

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Solution

The fourth proportional to 5,681.22, 8,512.38 and 1,981.41 is: 2,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.22 : 8,512.38 = 1,981.41 : x
  2. Step 2: Convert to fraction form
    5,681.22/8,512.38 = 1,981.41/x
  3. Step 3: Cross multiply
    5,681.22x = 8,512.38 × 1,981.41
  4. Step 4: Simplify right side
    5,681.22x = 16,866,514.86
  5. Step 5: Solve for x
    x = 16,866,514.86/5,681.22
  6. Step 6: Final answer
    x = 2,968.82

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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.