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Finding the Fourth Proportional to 4,715.99, 7,079.18 and 3,984.65

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Solution

The fourth proportional to 4,715.99, 7,079.18 and 3,984.65 is: 5,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,715.99 : 7,079.18 = 3,984.65 : x
  2. Step 2: Convert to fraction form
    4,715.99/7,079.18 = 3,984.65/x
  3. Step 3: Cross multiply
    4,715.99x = 7,079.18 × 3,984.65
  4. Step 4: Simplify right side
    4,715.99x = 28,207,999.27
  5. Step 5: Solve for x
    x = 28,207,999.27/4,715.99
  6. Step 6: Final answer
    x = 5,981.36

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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.