Home / 2,689.40-4,028.70-1,533.80

Finding the Fourth Proportional to 2,689.40, 4,028.70 and 1,533.80

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Solution

The fourth proportional to 2,689.40, 4,028.70 and 1,533.80 is: 2,297.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.40 : 4,028.70 = 1,533.80 : x
  2. Step 2: Convert to fraction form
    2,689.40/4,028.70 = 1,533.80/x
  3. Step 3: Cross multiply
    2,689.40x = 4,028.70 × 1,533.80
  4. Step 4: Simplify right side
    2,689.40x = 6,179,220.06
  5. Step 5: Solve for x
    x = 6,179,220.06/2,689.40
  6. Step 6: Final answer
    x = 2,297.62

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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.