Home / 2,688.43-4,031.62-1,044.78

Finding the Fourth Proportional to 2,688.43, 4,031.62 and 1,044.78

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Solution

The fourth proportional to 2,688.43, 4,031.62 and 1,044.78 is: 1,566.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.43 : 4,031.62 = 1,044.78 : x
  2. Step 2: Convert to fraction form
    2,688.43/4,031.62 = 1,044.78/x
  3. Step 3: Cross multiply
    2,688.43x = 4,031.62 × 1,044.78
  4. Step 4: Simplify right side
    2,688.43x = 4,212,155.94
  5. Step 5: Solve for x
    x = 4,212,155.94/2,688.43
  6. Step 6: Final answer
    x = 1,566.77

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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.