Home / 2,256.05-3,381.81-1,280.12

Finding the Fourth Proportional to 2,256.05, 3,381.81 and 1,280.12

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Solution

The fourth proportional to 2,256.05, 3,381.81 and 1,280.12 is: 1,918.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.05 : 3,381.81 = 1,280.12 : x
  2. Step 2: Convert to fraction form
    2,256.05/3,381.81 = 1,280.12/x
  3. Step 3: Cross multiply
    2,256.05x = 3,381.81 × 1,280.12
  4. Step 4: Simplify right side
    2,256.05x = 4,329,122.62
  5. Step 5: Solve for x
    x = 4,329,122.62/2,256.05
  6. Step 6: Final answer
    x = 1,918.89

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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.