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Finding the Fourth Proportional to 4,672.86, 7,007.19 and 1,384.80

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Solution

The fourth proportional to 4,672.86, 7,007.19 and 1,384.80 is: 2,076.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,672.86 : 7,007.19 = 1,384.80 : x
  2. Step 2: Convert to fraction form
    4,672.86/7,007.19 = 1,384.80/x
  3. Step 3: Cross multiply
    4,672.86x = 7,007.19 × 1,384.80
  4. Step 4: Simplify right side
    4,672.86x = 9,703,521.68
  5. Step 5: Solve for x
    x = 9,703,521.68/4,672.86
  6. Step 6: Final answer
    x = 2,076.57

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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.