Home / 3,168.26-4,372.11-1,989.98

Finding the Fourth Proportional to 3,168.26, 4,372.11 and 1,989.98

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Solution

The fourth proportional to 3,168.26, 4,372.11 and 1,989.98 is: 2,746.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.26 : 4,372.11 = 1,989.98 : x
  2. Step 2: Convert to fraction form
    3,168.26/4,372.11 = 1,989.98/x
  3. Step 3: Cross multiply
    3,168.26x = 4,372.11 × 1,989.98
  4. Step 4: Simplify right side
    3,168.26x = 8,700,411.46
  5. Step 5: Solve for x
    x = 8,700,411.46/3,168.26
  6. Step 6: Final answer
    x = 2,746.12

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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.