Home / 5,205.65-7,180.26-3,188.12

Finding the Fourth Proportional to 5,205.65, 7,180.26 and 3,188.12

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Solution

The fourth proportional to 5,205.65, 7,180.26 and 3,188.12 is: 4,397.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.65 : 7,180.26 = 3,188.12 : x
  2. Step 2: Convert to fraction form
    5,205.65/7,180.26 = 3,188.12/x
  3. Step 3: Cross multiply
    5,205.65x = 7,180.26 × 3,188.12
  4. Step 4: Simplify right side
    5,205.65x = 22,891,530.51
  5. Step 5: Solve for x
    x = 22,891,530.51/5,205.65
  6. Step 6: Final answer
    x = 4,397.44

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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.