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Finding the Fourth Proportional to 8,005.79, 12,011.42 and 4,055.09

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Solution

The fourth proportional to 8,005.79, 12,011.42 and 4,055.09 is: 6,084.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.79 : 12,011.42 = 4,055.09 : x
  2. Step 2: Convert to fraction form
    8,005.79/12,011.42 = 4,055.09/x
  3. Step 3: Cross multiply
    8,005.79x = 12,011.42 × 4,055.09
  4. Step 4: Simplify right side
    8,005.79x = 48,707,339.21
  5. Step 5: Solve for x
    x = 48,707,339.21/8,005.79
  6. Step 6: Final answer
    x = 6,084.01

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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.