Home / 1,259.05-1,880.09-1,028.39

Finding the Fourth Proportional to 1,259.05, 1,880.09 and 1,028.39

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Solution

The fourth proportional to 1,259.05, 1,880.09 and 1,028.39 is: 1,535.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.05 : 1,880.09 = 1,028.39 : x
  2. Step 2: Convert to fraction form
    1,259.05/1,880.09 = 1,028.39/x
  3. Step 3: Cross multiply
    1,259.05x = 1,880.09 × 1,028.39
  4. Step 4: Simplify right side
    1,259.05x = 1,933,469.17
  5. Step 5: Solve for x
    x = 1,933,469.17/1,259.05
  6. Step 6: Final answer
    x = 1,535.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.