Home / 2,217.90-3,060.15-1,431

Finding the Fourth Proportional to 2,217.90, 3,060.15 and 1,431

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Solution

The fourth proportional to 2,217.90, 3,060.15 and 1,431 is: 1,974.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.90 : 3,060.15 = 1,431 : x
  2. Step 2: Convert to fraction form
    2,217.90/3,060.15 = 1,431/x
  3. Step 3: Cross multiply
    2,217.90x = 3,060.15 × 1,431
  4. Step 4: Simplify right side
    2,217.90x = 4,379,074.65
  5. Step 5: Solve for x
    x = 4,379,074.65/2,217.90
  6. Step 6: Final answer
    x = 1,974.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.