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Finding the Fourth Proportional to 2,788.93, 4,178.96 and 1,472.64

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Solution

The fourth proportional to 2,788.93, 4,178.96 and 1,472.64 is: 2,206.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.93 : 4,178.96 = 1,472.64 : x
  2. Step 2: Convert to fraction form
    2,788.93/4,178.96 = 1,472.64/x
  3. Step 3: Cross multiply
    2,788.93x = 4,178.96 × 1,472.64
  4. Step 4: Simplify right side
    2,788.93x = 6,154,103.65
  5. Step 5: Solve for x
    x = 6,154,103.65/2,788.93
  6. Step 6: Final answer
    x = 2,206.62

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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.