Home / 5,790.74-7,991.32-3,138.24

Finding the Fourth Proportional to 5,790.74, 7,991.32 and 3,138.24

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Solution

The fourth proportional to 5,790.74, 7,991.32 and 3,138.24 is: 4,330.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,790.74 : 7,991.32 = 3,138.24 : x
  2. Step 2: Convert to fraction form
    5,790.74/7,991.32 = 3,138.24/x
  3. Step 3: Cross multiply
    5,790.74x = 7,991.32 × 3,138.24
  4. Step 4: Simplify right side
    5,790.74x = 25,078,680.08
  5. Step 5: Solve for x
    x = 25,078,680.08/5,790.74
  6. Step 6: Final answer
    x = 4,330.82

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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.