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Finding the Fourth Proportional to 2,958.76, 4,437.78 and 1,859.68

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Solution

The fourth proportional to 2,958.76, 4,437.78 and 1,859.68 is: 2,789.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,958.76 : 4,437.78 = 1,859.68 : x
  2. Step 2: Convert to fraction form
    2,958.76/4,437.78 = 1,859.68/x
  3. Step 3: Cross multiply
    2,958.76x = 4,437.78 × 1,859.68
  4. Step 4: Simplify right side
    2,958.76x = 8,252,850.71
  5. Step 5: Solve for x
    x = 8,252,850.71/2,958.76
  6. Step 6: Final answer
    x = 2,789.29

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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.