Home / 1,362.88-2,033.60-1,280.32

Finding the Fourth Proportional to 1,362.88, 2,033.60 and 1,280.32

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Solution

The fourth proportional to 1,362.88, 2,033.60 and 1,280.32 is: 1,910.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.88 : 2,033.60 = 1,280.32 : x
  2. Step 2: Convert to fraction form
    1,362.88/2,033.60 = 1,280.32/x
  3. Step 3: Cross multiply
    1,362.88x = 2,033.60 × 1,280.32
  4. Step 4: Simplify right side
    1,362.88x = 2,603,658.75
  5. Step 5: Solve for x
    x = 2,603,658.75/1,362.88
  6. Step 6: Final answer
    x = 1,910.41

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1.5x scale

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.