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Finding the Fourth Proportional to 3,488.78, 4,819.29 and 2,833.76

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Solution

The fourth proportional to 3,488.78, 4,819.29 and 2,833.76 is: 3,914.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.78 : 4,819.29 = 2,833.76 : x
  2. Step 2: Convert to fraction form
    3,488.78/4,819.29 = 2,833.76/x
  3. Step 3: Cross multiply
    3,488.78x = 4,819.29 × 2,833.76
  4. Step 4: Simplify right side
    3,488.78x = 13,656,711.23
  5. Step 5: Solve for x
    x = 13,656,711.23/3,488.78
  6. Step 6: Final answer
    x = 3,914.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.