Home / 1,989.18-2,746.20-1,327.14

Finding the Fourth Proportional to 1,989.18, 2,746.20 and 1,327.14

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Solution

The fourth proportional to 1,989.18, 2,746.20 and 1,327.14 is: 1,832.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.18 : 2,746.20 = 1,327.14 : x
  2. Step 2: Convert to fraction form
    1,989.18/2,746.20 = 1,327.14/x
  3. Step 3: Cross multiply
    1,989.18x = 2,746.20 × 1,327.14
  4. Step 4: Simplify right side
    1,989.18x = 3,644,591.87
  5. Step 5: Solve for x
    x = 3,644,591.87/1,989.18
  6. Step 6: Final answer
    x = 1,832.21

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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.