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Finding the Fourth Proportional to 2,146.66, 3,219.16 and 914.64

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Solution

The fourth proportional to 2,146.66, 3,219.16 and 914.64 is: 1,371.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.66 : 3,219.16 = 914.64 : x
  2. Step 2: Convert to fraction form
    2,146.66/3,219.16 = 914.64/x
  3. Step 3: Cross multiply
    2,146.66x = 3,219.16 × 914.64
  4. Step 4: Simplify right side
    2,146.66x = 2,944,372.50
  5. Step 5: Solve for x
    x = 2,944,372.50/2,146.66
  6. Step 6: Final answer
    x = 1,371.61

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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.