Home / 5,645.56-7,790.89-3,127.61

Finding the Fourth Proportional to 5,645.56, 7,790.89 and 3,127.61

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Solution

The fourth proportional to 5,645.56, 7,790.89 and 3,127.61 is: 4,316.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.56 : 7,790.89 = 3,127.61 : x
  2. Step 2: Convert to fraction form
    5,645.56/7,790.89 = 3,127.61/x
  3. Step 3: Cross multiply
    5,645.56x = 7,790.89 × 3,127.61
  4. Step 4: Simplify right side
    5,645.56x = 24,366,865.47
  5. Step 5: Solve for x
    x = 24,366,865.47/5,645.56
  6. Step 6: Final answer
    x = 4,316.11

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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.