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Finding the Fourth Proportional to 2,819.23, 4,229.14 and 970.11

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Solution

The fourth proportional to 2,819.23, 4,229.14 and 970.11 is: 1,455.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.23 : 4,229.14 = 970.11 : x
  2. Step 2: Convert to fraction form
    2,819.23/4,229.14 = 970.11/x
  3. Step 3: Cross multiply
    2,819.23x = 4,229.14 × 970.11
  4. Step 4: Simplify right side
    2,819.23x = 4,102,709.83
  5. Step 5: Solve for x
    x = 4,102,709.83/2,819.23
  6. Step 6: Final answer
    x = 1,455.26

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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.