Home / 3,115.65-4,674.30-1,359.90

Finding the Fourth Proportional to 3,115.65, 4,674.30 and 1,359.90

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Solution

The fourth proportional to 3,115.65, 4,674.30 and 1,359.90 is: 2,040.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.65 : 4,674.30 = 1,359.90 : x
  2. Step 2: Convert to fraction form
    3,115.65/4,674.30 = 1,359.90/x
  3. Step 3: Cross multiply
    3,115.65x = 4,674.30 × 1,359.90
  4. Step 4: Simplify right side
    3,115.65x = 6,356,580.57
  5. Step 5: Solve for x
    x = 6,356,580.57/3,115.65
  6. Step 6: Final answer
    x = 2,040.21

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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.