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Finding the Fourth Proportional to 2,108.16, 3,163.59 and 876.44

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Solution

The fourth proportional to 2,108.16, 3,163.59 and 876.44 is: 1,315.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.16 : 3,163.59 = 876.44 : x
  2. Step 2: Convert to fraction form
    2,108.16/3,163.59 = 876.44/x
  3. Step 3: Cross multiply
    2,108.16x = 3,163.59 × 876.44
  4. Step 4: Simplify right side
    2,108.16x = 2,772,704.73
  5. Step 5: Solve for x
    x = 2,772,704.73/2,108.16
  6. Step 6: Final answer
    x = 1,315.22

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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.