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Finding the Fourth Proportional to 2,108.82, 3,164.64 and 876.23

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Solution

The fourth proportional to 2,108.82, 3,164.64 and 876.23 is: 1,314.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.82 : 3,164.64 = 876.23 : x
  2. Step 2: Convert to fraction form
    2,108.82/3,164.64 = 876.23/x
  3. Step 3: Cross multiply
    2,108.82x = 3,164.64 × 876.23
  4. Step 4: Simplify right side
    2,108.82x = 2,772,936.68
  5. Step 5: Solve for x
    x = 2,772,936.68/2,108.82
  6. Step 6: Final answer
    x = 1,314.92

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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.