Home / 1,280.93-1,922.13-540.49

Finding the Fourth Proportional to 1,280.93, 1,922.13 and 540.49

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Solution

The fourth proportional to 1,280.93, 1,922.13 and 540.49 is: 811.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280.93 : 1,922.13 = 540.49 : x
  2. Step 2: Convert to fraction form
    1,280.93/1,922.13 = 540.49/x
  3. Step 3: Cross multiply
    1,280.93x = 1,922.13 × 540.49
  4. Step 4: Simplify right side
    1,280.93x = 1,038,887.24
  5. Step 5: Solve for x
    x = 1,038,887.24/1,280.93
  6. Step 6: Final answer
    x = 811.04

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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.