Home / 2,569.81-3,847.56-1,689.61

Finding the Fourth Proportional to 2,569.81, 3,847.56 and 1,689.61

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Solution

The fourth proportional to 2,569.81, 3,847.56 and 1,689.61 is: 2,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,569.81 : 3,847.56 = 1,689.61 : x
  2. Step 2: Convert to fraction form
    2,569.81/3,847.56 = 1,689.61/x
  3. Step 3: Cross multiply
    2,569.81x = 3,847.56 × 1,689.61
  4. Step 4: Simplify right side
    2,569.81x = 6,500,875.85
  5. Step 5: Solve for x
    x = 6,500,875.85/2,569.81
  6. Step 6: Final answer
    x = 2,529.71

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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.