Home / 5,645.56-7,790.86-3,127.68

Finding the Fourth Proportional to 5,645.56, 7,790.86 and 3,127.68

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Solution

The fourth proportional to 5,645.56, 7,790.86 and 3,127.68 is: 4,316.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.56 : 7,790.86 = 3,127.68 : x
  2. Step 2: Convert to fraction form
    5,645.56/7,790.86 = 3,127.68/x
  3. Step 3: Cross multiply
    5,645.56x = 7,790.86 × 3,127.68
  4. Step 4: Simplify right side
    5,645.56x = 24,367,297.53
  5. Step 5: Solve for x
    x = 24,367,297.53/5,645.56
  6. Step 6: Final answer
    x = 4,316.19

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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.