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Finding the Fourth Proportional to 8,019.65, 12,018.87 and 5,805.89

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Solution

The fourth proportional to 8,019.65, 12,018.87 and 5,805.89 is: 8,701.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,019.65 : 12,018.87 = 5,805.89 : x
  2. Step 2: Convert to fraction form
    8,019.65/12,018.87 = 5,805.89/x
  3. Step 3: Cross multiply
    8,019.65x = 12,018.87 × 5,805.89
  4. Step 4: Simplify right side
    8,019.65x = 69,780,177.05
  5. Step 5: Solve for x
    x = 69,780,177.05/8,019.65
  6. Step 6: Final answer
    x = 8,701.16

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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.