Home / 2,688.06-3,709.71-1,639.98

Finding the Fourth Proportional to 2,688.06, 3,709.71 and 1,639.98

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Solution

The fourth proportional to 2,688.06, 3,709.71 and 1,639.98 is: 2,263.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.06 : 3,709.71 = 1,639.98 : x
  2. Step 2: Convert to fraction form
    2,688.06/3,709.71 = 1,639.98/x
  3. Step 3: Cross multiply
    2,688.06x = 3,709.71 × 1,639.98
  4. Step 4: Simplify right side
    2,688.06x = 6,083,850.21
  5. Step 5: Solve for x
    x = 6,083,850.21/2,688.06
  6. Step 6: Final answer
    x = 2,263.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.