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Finding the Fourth Proportional to 4,479.05, 6,719.18 and 1,881.38

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Solution

The fourth proportional to 4,479.05, 6,719.18 and 1,881.38 is: 2,822.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.05 : 6,719.18 = 1,881.38 : x
  2. Step 2: Convert to fraction form
    4,479.05/6,719.18 = 1,881.38/x
  3. Step 3: Cross multiply
    4,479.05x = 6,719.18 × 1,881.38
  4. Step 4: Simplify right side
    4,479.05x = 12,641,287.87
  5. Step 5: Solve for x
    x = 12,641,287.87/4,479.05
  6. Step 6: Final answer
    x = 2,822.32

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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.