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Finding the Fourth Proportional to 4,788.65, 7,179.10 and 2,154.23

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Solution

The fourth proportional to 4,788.65, 7,179.10 and 2,154.23 is: 3,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788.65 : 7,179.10 = 2,154.23 : x
  2. Step 2: Convert to fraction form
    4,788.65/7,179.10 = 2,154.23/x
  3. Step 3: Cross multiply
    4,788.65x = 7,179.10 × 2,154.23
  4. Step 4: Simplify right side
    4,788.65x = 15,465,432.59
  5. Step 5: Solve for x
    x = 15,465,432.59/4,788.65
  6. Step 6: Final answer
    x = 3,229.60

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1.5x scale

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.