Home / 5,491.80-7,578.72-3,134.16

Finding the Fourth Proportional to 5,491.80, 7,578.72 and 3,134.16

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Solution

The fourth proportional to 5,491.80, 7,578.72 and 3,134.16 is: 4,325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,491.80 : 7,578.72 = 3,134.16 : x
  2. Step 2: Convert to fraction form
    5,491.80/7,578.72 = 3,134.16/x
  3. Step 3: Cross multiply
    5,491.80x = 7,578.72 × 3,134.16
  4. Step 4: Simplify right side
    5,491.80x = 23,752,921.08
  5. Step 5: Solve for x
    x = 23,752,921.08/5,491.80
  6. Step 6: Final answer
    x = 4,325.16

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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.