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Finding the Fourth Proportional to 3,600.79, 5,401.14 and 1,411.06

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Solution

The fourth proportional to 3,600.79, 5,401.14 and 1,411.06 is: 2,116.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.79 : 5,401.14 = 1,411.06 : x
  2. Step 2: Convert to fraction form
    3,600.79/5,401.14 = 1,411.06/x
  3. Step 3: Cross multiply
    3,600.79x = 5,401.14 × 1,411.06
  4. Step 4: Simplify right side
    3,600.79x = 7,621,332.61
  5. Step 5: Solve for x
    x = 7,621,332.61/3,600.79
  6. Step 6: Final answer
    x = 2,116.57

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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.