Home / 1,280.88-1,766.36-1,104.40

Finding the Fourth Proportional to 1,280.88, 1,766.36 and 1,104.40

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Solution

The fourth proportional to 1,280.88, 1,766.36 and 1,104.40 is: 1,522.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280.88 : 1,766.36 = 1,104.40 : x
  2. Step 2: Convert to fraction form
    1,280.88/1,766.36 = 1,104.40/x
  3. Step 3: Cross multiply
    1,280.88x = 1,766.36 × 1,104.40
  4. Step 4: Simplify right side
    1,280.88x = 1,950,767.98
  5. Step 5: Solve for x
    x = 1,950,767.98/1,280.88
  6. Step 6: Final answer
    x = 1,522.99

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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.