Home / 2,689.32-4,033.98-1,228.08

Finding the Fourth Proportional to 2,689.32, 4,033.98 and 1,228.08

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Solution

The fourth proportional to 2,689.32, 4,033.98 and 1,228.08 is: 1,842.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.32 : 4,033.98 = 1,228.08 : x
  2. Step 2: Convert to fraction form
    2,689.32/4,033.98 = 1,228.08/x
  3. Step 3: Cross multiply
    2,689.32x = 4,033.98 × 1,228.08
  4. Step 4: Simplify right side
    2,689.32x = 4,954,050.16
  5. Step 5: Solve for x
    x = 4,954,050.16/2,689.32
  6. Step 6: Final answer
    x = 1,842.12

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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.