Home / 5,359.32-7,395.42-3,121.80

Finding the Fourth Proportional to 5,359.32, 7,395.42 and 3,121.80

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Solution

The fourth proportional to 5,359.32, 7,395.42 and 3,121.80 is: 4,307.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,359.32 : 7,395.42 = 3,121.80 : x
  2. Step 2: Convert to fraction form
    5,359.32/7,395.42 = 3,121.80/x
  3. Step 3: Cross multiply
    5,359.32x = 7,395.42 × 3,121.80
  4. Step 4: Simplify right side
    5,359.32x = 23,087,022.16
  5. Step 5: Solve for x
    x = 23,087,022.16/5,359.32
  6. Step 6: Final answer
    x = 4,307.83

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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.