Home / 3,913.29-5,868.54-1,280.16

Finding the Fourth Proportional to 3,913.29, 5,868.54 and 1,280.16

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Solution

The fourth proportional to 3,913.29, 5,868.54 and 1,280.16 is: 1,919.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.29 : 5,868.54 = 1,280.16 : x
  2. Step 2: Convert to fraction form
    3,913.29/5,868.54 = 1,280.16/x
  3. Step 3: Cross multiply
    3,913.29x = 5,868.54 × 1,280.16
  4. Step 4: Simplify right side
    3,913.29x = 7,512,670.17
  5. Step 5: Solve for x
    x = 7,512,670.17/3,913.29
  6. Step 6: Final answer
    x = 1,919.78

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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.