Home / 8,091.04-12,138.84-7,319.92

Finding the Fourth Proportional to 8,091.04, 12,138.84 and 7,319.92

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Solution

The fourth proportional to 8,091.04, 12,138.84 and 7,319.92 is: 10,981.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.04 : 12,138.84 = 7,319.92 : x
  2. Step 2: Convert to fraction form
    8,091.04/12,138.84 = 7,319.92/x
  3. Step 3: Cross multiply
    8,091.04x = 12,138.84 × 7,319.92
  4. Step 4: Simplify right side
    8,091.04x = 88,855,337.69
  5. Step 5: Solve for x
    x = 88,855,337.69/8,091.04
  6. Step 6: Final answer
    x = 10,981.94

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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.