Home / 3,080.40-4,619.92-888.65

Finding the Fourth Proportional to 3,080.40, 4,619.92 and 888.65

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Solution

The fourth proportional to 3,080.40, 4,619.92 and 888.65 is: 1,332.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,080.40 : 4,619.92 = 888.65 : x
  2. Step 2: Convert to fraction form
    3,080.40/4,619.92 = 888.65/x
  3. Step 3: Cross multiply
    3,080.40x = 4,619.92 × 888.65
  4. Step 4: Simplify right side
    3,080.40x = 4,105,491.91
  5. Step 5: Solve for x
    x = 4,105,491.91/3,080.40
  6. Step 6: Final answer
    x = 1,332.78

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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.