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Finding the Fourth Proportional to 2,289.74, 3,436.02 and 1,057.32

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Solution

The fourth proportional to 2,289.74, 3,436.02 and 1,057.32 is: 1,586.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.74 : 3,436.02 = 1,057.32 : x
  2. Step 2: Convert to fraction form
    2,289.74/3,436.02 = 1,057.32/x
  3. Step 3: Cross multiply
    2,289.74x = 3,436.02 × 1,057.32
  4. Step 4: Simplify right side
    2,289.74x = 3,632,972.67
  5. Step 5: Solve for x
    x = 3,632,972.67/2,289.74
  6. Step 6: Final answer
    x = 1,586.63

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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.