Home / 7,315.25-10,972.87-3,422.39

Finding the Fourth Proportional to 7,315.25, 10,972.87 and 3,422.39

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Solution

The fourth proportional to 7,315.25, 10,972.87 and 3,422.39 is: 5,133.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.25 : 10,972.87 = 3,422.39 : x
  2. Step 2: Convert to fraction form
    7,315.25/10,972.87 = 3,422.39/x
  3. Step 3: Cross multiply
    7,315.25x = 10,972.87 × 3,422.39
  4. Step 4: Simplify right side
    7,315.25x = 37,553,377.14
  5. Step 5: Solve for x
    x = 37,553,377.14/7,315.25
  6. Step 6: Final answer
    x = 5,133.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.