Home / 5,488.75-7,574.48-3,131.65

Finding the Fourth Proportional to 5,488.75, 7,574.48 and 3,131.65

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Solution

The fourth proportional to 5,488.75, 7,574.48 and 3,131.65 is: 4,321.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,488.75 : 7,574.48 = 3,131.65 : x
  2. Step 2: Convert to fraction form
    5,488.75/7,574.48 = 3,131.65/x
  3. Step 3: Cross multiply
    5,488.75x = 7,574.48 × 3,131.65
  4. Step 4: Simplify right side
    5,488.75x = 23,720,620.29
  5. Step 5: Solve for x
    x = 23,720,620.29/5,488.75
  6. Step 6: Final answer
    x = 4,321.68

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1.5x scale

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.