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Finding the Fourth Proportional to 2,216.68, 3,325.08 and 918.24

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Solution

The fourth proportional to 2,216.68, 3,325.08 and 918.24 is: 1,377.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.68 : 3,325.08 = 918.24 : x
  2. Step 2: Convert to fraction form
    2,216.68/3,325.08 = 918.24/x
  3. Step 3: Cross multiply
    2,216.68x = 3,325.08 × 918.24
  4. Step 4: Simplify right side
    2,216.68x = 3,053,221.46
  5. Step 5: Solve for x
    x = 3,053,221.46/2,216.68
  6. Step 6: Final answer
    x = 1,377.38

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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.