Home / 2,113.20-3,170.52-1,872.72

Finding the Fourth Proportional to 2,113.20, 3,170.52 and 1,872.72

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Solution

The fourth proportional to 2,113.20, 3,170.52 and 1,872.72 is: 2,809.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.20 : 3,170.52 = 1,872.72 : x
  2. Step 2: Convert to fraction form
    2,113.20/3,170.52 = 1,872.72/x
  3. Step 3: Cross multiply
    2,113.20x = 3,170.52 × 1,872.72
  4. Step 4: Simplify right side
    2,113.20x = 5,937,496.21
  5. Step 5: Solve for x
    x = 5,937,496.21/2,113.20
  6. Step 6: Final answer
    x = 2,809.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.