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Finding the Fourth Proportional to 2,216.39, 3,325.07 and 656.51

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Solution

The fourth proportional to 2,216.39, 3,325.07 and 656.51 is: 984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.39 : 3,325.07 = 656.51 : x
  2. Step 2: Convert to fraction form
    2,216.39/3,325.07 = 656.51/x
  3. Step 3: Cross multiply
    2,216.39x = 3,325.07 × 656.51
  4. Step 4: Simplify right side
    2,216.39x = 2,182,949.20
  5. Step 5: Solve for x
    x = 2,182,949.20/2,216.39
  6. Step 6: Final answer
    x = 984.91

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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.