Home / 2,217.24-3,325.30-985.40

Finding the Fourth Proportional to 2,217.24, 3,325.30 and 985.40

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Solution

The fourth proportional to 2,217.24, 3,325.30 and 985.40 is: 1,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.24 : 3,325.30 = 985.40 : x
  2. Step 2: Convert to fraction form
    2,217.24/3,325.30 = 985.40/x
  3. Step 3: Cross multiply
    2,217.24x = 3,325.30 × 985.40
  4. Step 4: Simplify right side
    2,217.24x = 3,276,750.62
  5. Step 5: Solve for x
    x = 3,276,750.62/2,217.24
  6. Step 6: Final answer
    x = 1,477.85

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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.