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Finding the Fourth Proportional to 3,600.90, 5,402.70 and 1,411.20

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Solution

The fourth proportional to 3,600.90, 5,402.70 and 1,411.20 is: 2,117.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.90 : 5,402.70 = 1,411.20 : x
  2. Step 2: Convert to fraction form
    3,600.90/5,402.70 = 1,411.20/x
  3. Step 3: Cross multiply
    3,600.90x = 5,402.70 × 1,411.20
  4. Step 4: Simplify right side
    3,600.90x = 7,624,290.24
  5. Step 5: Solve for x
    x = 7,624,290.24/3,600.90
  6. Step 6: Final answer
    x = 2,117.33

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1.5x scale

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.