Home / 5,286.12-7,294.50-2,928.12

Finding the Fourth Proportional to 5,286.12, 7,294.50 and 2,928.12

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Solution

The fourth proportional to 5,286.12, 7,294.50 and 2,928.12 is: 4,040.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.12 : 7,294.50 = 2,928.12 : x
  2. Step 2: Convert to fraction form
    5,286.12/7,294.50 = 2,928.12/x
  3. Step 3: Cross multiply
    5,286.12x = 7,294.50 × 2,928.12
  4. Step 4: Simplify right side
    5,286.12x = 21,359,171.34
  5. Step 5: Solve for x
    x = 21,359,171.34/5,286.12
  6. Step 6: Final answer
    x = 4,040.61

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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.