Home / 7,858.92-11,788.20-2,312.12

Finding the Fourth Proportional to 7,858.92, 11,788.20 and 2,312.12

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Solution

The fourth proportional to 7,858.92, 11,788.20 and 2,312.12 is: 3,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.92 : 11,788.20 = 2,312.12 : x
  2. Step 2: Convert to fraction form
    7,858.92/11,788.20 = 2,312.12/x
  3. Step 3: Cross multiply
    7,858.92x = 11,788.20 × 2,312.12
  4. Step 4: Simplify right side
    7,858.92x = 27,255,732.98
  5. Step 5: Solve for x
    x = 27,255,732.98/7,858.92
  6. Step 6: Final answer
    x = 3,468.13

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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.