Home / 5,215,121.72-7,196,856.43-2,891,956.83

Finding the Fourth Proportional to 5,215,121.72, 7,196,856.43 and 2,891,956.83

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Solution

The fourth proportional to 5,215,121.72, 7,196,856.43 and 2,891,956.83 is: 3,990,894.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215,121.72 : 7,196,856.43 = 2,891,956.83 : x
  2. Step 2: Convert to fraction form
    5,215,121.72/7,196,856.43 = 2,891,956.83/x
  3. Step 3: Cross multiply
    5,215,121.72x = 7,196,856.43 × 2,891,956.83
  4. Step 4: Simplify right side
    5,215,121.72x = 20,812,998,092,808.13
  5. Step 5: Solve for x
    x = 20,812,998,092,808.13/5,215,121.72
  6. Step 6: Final answer
    x = 3,990,894.03

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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.