Home / 10,286.38-15,429.50-2,890.79

Finding the Fourth Proportional to 10,286.38, 15,429.50 and 2,890.79

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Solution

The fourth proportional to 10,286.38, 15,429.50 and 2,890.79 is: 4,336.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,286.38 : 15,429.50 = 2,890.79 : x
  2. Step 2: Convert to fraction form
    10,286.38/15,429.50 = 2,890.79/x
  3. Step 3: Cross multiply
    10,286.38x = 15,429.50 × 2,890.79
  4. Step 4: Simplify right side
    10,286.38x = 44,603,437.67
  5. Step 5: Solve for x
    x = 44,603,437.67/10,286.38
  6. Step 6: Final answer
    x = 4,336.17

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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.