Home / 5,645.33-7,790.17-3,127.21

Finding the Fourth Proportional to 5,645.33, 7,790.17 and 3,127.21

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Solution

The fourth proportional to 5,645.33, 7,790.17 and 3,127.21 is: 4,315.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.33 : 7,790.17 = 3,127.21 : x
  2. Step 2: Convert to fraction form
    5,645.33/7,790.17 = 3,127.21/x
  3. Step 3: Cross multiply
    5,645.33x = 7,790.17 × 3,127.21
  4. Step 4: Simplify right side
    5,645.33x = 24,361,442.94
  5. Step 5: Solve for x
    x = 24,361,442.94/5,645.33
  6. Step 6: Final answer
    x = 4,315.33

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Half scale
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Double scale
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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.