Home / 5,645.07-7,790.85-3,287.21

Finding the Fourth Proportional to 5,645.07, 7,790.85 and 3,287.21

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Solution

The fourth proportional to 5,645.07, 7,790.85 and 3,287.21 is: 4,536.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.07 : 7,790.85 = 3,287.21 : x
  2. Step 2: Convert to fraction form
    5,645.07/7,790.85 = 3,287.21/x
  3. Step 3: Cross multiply
    5,645.07x = 7,790.85 × 3,287.21
  4. Step 4: Simplify right side
    5,645.07x = 25,610,121.07
  5. Step 5: Solve for x
    x = 25,610,121.07/5,645.07
  6. Step 6: Final answer
    x = 4,536.72

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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.