Home / 8,051.12-12,078.50-2,856.99

Finding the Fourth Proportional to 8,051.12, 12,078.50 and 2,856.99

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Solution

The fourth proportional to 8,051.12, 12,078.50 and 2,856.99 is: 4,286.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,051.12 : 12,078.50 = 2,856.99 : x
  2. Step 2: Convert to fraction form
    8,051.12/12,078.50 = 2,856.99/x
  3. Step 3: Cross multiply
    8,051.12x = 12,078.50 × 2,856.99
  4. Step 4: Simplify right side
    8,051.12x = 34,508,139.43
  5. Step 5: Solve for x
    x = 34,508,139.43/8,051.12
  6. Step 6: Final answer
    x = 4,286.13

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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.