Home / 2,919.62-4,031.70-2,715.50

Finding the Fourth Proportional to 2,919.62, 4,031.70 and 2,715.50

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Solution

The fourth proportional to 2,919.62, 4,031.70 and 2,715.50 is: 3,749.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.62 : 4,031.70 = 2,715.50 : x
  2. Step 2: Convert to fraction form
    2,919.62/4,031.70 = 2,715.50/x
  3. Step 3: Cross multiply
    2,919.62x = 4,031.70 × 2,715.50
  4. Step 4: Simplify right side
    2,919.62x = 10,948,081.35
  5. Step 5: Solve for x
    x = 10,948,081.35/2,919.62
  6. Step 6: Final answer
    x = 3,749.83

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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.