Home / 2,406.50-3,612.68-1,889.78

Finding the Fourth Proportional to 2,406.50, 3,612.68 and 1,889.78

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Solution

The fourth proportional to 2,406.50, 3,612.68 and 1,889.78 is: 2,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,406.50 : 3,612.68 = 1,889.78 : x
  2. Step 2: Convert to fraction form
    2,406.50/3,612.68 = 1,889.78/x
  3. Step 3: Cross multiply
    2,406.50x = 3,612.68 × 1,889.78
  4. Step 4: Simplify right side
    2,406.50x = 6,827,142.90
  5. Step 5: Solve for x
    x = 6,827,142.90/2,406.50
  6. Step 6: Final answer
    x = 2,836.97

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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.