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Finding the Fourth Proportional to 2,889.76, 4,334.88 and 1,329.76

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Solution

The fourth proportional to 2,889.76, 4,334.88 and 1,329.76 is: 1,994.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.76 : 4,334.88 = 1,329.76 : x
  2. Step 2: Convert to fraction form
    2,889.76/4,334.88 = 1,329.76/x
  3. Step 3: Cross multiply
    2,889.76x = 4,334.88 × 1,329.76
  4. Step 4: Simplify right side
    2,889.76x = 5,764,350.03
  5. Step 5: Solve for x
    x = 5,764,350.03/2,889.76
  6. Step 6: Final answer
    x = 1,994.75

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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.