Home / 2,253.84-3,380.76-1,280.40

Finding the Fourth Proportional to 2,253.84, 3,380.76 and 1,280.40

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Solution

The fourth proportional to 2,253.84, 3,380.76 and 1,280.40 is: 1,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.84 : 3,380.76 = 1,280.40 : x
  2. Step 2: Convert to fraction form
    2,253.84/3,380.76 = 1,280.40/x
  3. Step 3: Cross multiply
    2,253.84x = 3,380.76 × 1,280.40
  4. Step 4: Simplify right side
    2,253.84x = 4,328,725.10
  5. Step 5: Solve for x
    x = 4,328,725.10/2,253.84
  6. Step 6: Final answer
    x = 1,920.60

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1.5x scale

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.