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Finding the Fourth Proportional to 2,216.82, 3,325.67 and 656.85

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Solution

The fourth proportional to 2,216.82, 3,325.67 and 656.85 is: 985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.82 : 3,325.67 = 656.85 : x
  2. Step 2: Convert to fraction form
    2,216.82/3,325.67 = 656.85/x
  3. Step 3: Cross multiply
    2,216.82x = 3,325.67 × 656.85
  4. Step 4: Simplify right side
    2,216.82x = 2,184,463.06
  5. Step 5: Solve for x
    x = 2,184,463.06/2,216.82
  6. Step 6: Final answer
    x = 985.40

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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.