Home / 8,006.72-12,011.36-3,390.40

Finding the Fourth Proportional to 8,006.72, 12,011.36 and 3,390.40

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Solution

The fourth proportional to 8,006.72, 12,011.36 and 3,390.40 is: 5,086.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,006.72 : 12,011.36 = 3,390.40 : x
  2. Step 2: Convert to fraction form
    8,006.72/12,011.36 = 3,390.40/x
  3. Step 3: Cross multiply
    8,006.72x = 12,011.36 × 3,390.40
  4. Step 4: Simplify right side
    8,006.72x = 40,723,314.94
  5. Step 5: Solve for x
    x = 40,723,314.94/8,006.72
  6. Step 6: Final answer
    x = 5,086.14

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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.