Home / 2,217.27-3,319.46-1,290

Finding the Fourth Proportional to 2,217.27, 3,319.46 and 1,290

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Solution

The fourth proportional to 2,217.27, 3,319.46 and 1,290 is: 1,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.27 : 3,319.46 = 1,290 : x
  2. Step 2: Convert to fraction form
    2,217.27/3,319.46 = 1,290/x
  3. Step 3: Cross multiply
    2,217.27x = 3,319.46 × 1,290
  4. Step 4: Simplify right side
    2,217.27x = 4,282,103.40
  5. Step 5: Solve for x
    x = 4,282,103.40/2,217.27
  6. Step 6: Final answer
    x = 1,931.25

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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.