Home / 2,491.61-3,729.51-1,392.65

Finding the Fourth Proportional to 2,491.61, 3,729.51 and 1,392.65

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Solution

The fourth proportional to 2,491.61, 3,729.51 and 1,392.65 is: 2,084.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.61 : 3,729.51 = 1,392.65 : x
  2. Step 2: Convert to fraction form
    2,491.61/3,729.51 = 1,392.65/x
  3. Step 3: Cross multiply
    2,491.61x = 3,729.51 × 1,392.65
  4. Step 4: Simplify right side
    2,491.61x = 5,193,883.45
  5. Step 5: Solve for x
    x = 5,193,883.45/2,491.61
  6. Step 6: Final answer
    x = 2,084.55

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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.