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Finding the Fourth Proportional to 3,600.76, 5,401.13 and 1,407.95

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Solution

The fourth proportional to 3,600.76, 5,401.13 and 1,407.95 is: 2,111.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.76 : 5,401.13 = 1,407.95 : x
  2. Step 2: Convert to fraction form
    3,600.76/5,401.13 = 1,407.95/x
  3. Step 3: Cross multiply
    3,600.76x = 5,401.13 × 1,407.95
  4. Step 4: Simplify right side
    3,600.76x = 7,604,521.94
  5. Step 5: Solve for x
    x = 7,604,521.94/3,600.76
  6. Step 6: Final answer
    x = 2,111.92

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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.