Home / 2,173.10-3,260.10-1,247.90

Finding the Fourth Proportional to 2,173.10, 3,260.10 and 1,247.90

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Solution

The fourth proportional to 2,173.10, 3,260.10 and 1,247.90 is: 1,872.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.10 : 3,260.10 = 1,247.90 : x
  2. Step 2: Convert to fraction form
    2,173.10/3,260.10 = 1,247.90/x
  3. Step 3: Cross multiply
    2,173.10x = 3,260.10 × 1,247.90
  4. Step 4: Simplify right side
    2,173.10x = 4,068,278.79
  5. Step 5: Solve for x
    x = 4,068,278.79/2,173.10
  6. Step 6: Final answer
    x = 1,872.11

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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.