Home / 7,221.28-10,836.51-3,936.46

Finding the Fourth Proportional to 7,221.28, 10,836.51 and 3,936.46

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Solution

The fourth proportional to 7,221.28, 10,836.51 and 3,936.46 is: 5,907.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.28 : 10,836.51 = 3,936.46 : x
  2. Step 2: Convert to fraction form
    7,221.28/10,836.51 = 3,936.46/x
  3. Step 3: Cross multiply
    7,221.28x = 10,836.51 × 3,936.46
  4. Step 4: Simplify right side
    7,221.28x = 42,657,488.15
  5. Step 5: Solve for x
    x = 42,657,488.15/7,221.28
  6. Step 6: Final answer
    x = 5,907.19

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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.