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Finding the Fourth Proportional to 4,479.61, 6,719.42 and 2,011.55

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Solution

The fourth proportional to 4,479.61, 6,719.42 and 2,011.55 is: 3,017.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.61 : 6,719.42 = 2,011.55 : x
  2. Step 2: Convert to fraction form
    4,479.61/6,719.42 = 2,011.55/x
  3. Step 3: Cross multiply
    4,479.61x = 6,719.42 × 2,011.55
  4. Step 4: Simplify right side
    4,479.61x = 13,516,450.04
  5. Step 5: Solve for x
    x = 13,516,450.04/4,479.61
  6. Step 6: Final answer
    x = 3,017.33

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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.