Home / 3,913.84-5,869.27-1,280.71

Finding the Fourth Proportional to 3,913.84, 5,869.27 and 1,280.71

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Solution

The fourth proportional to 3,913.84, 5,869.27 and 1,280.71 is: 1,920.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.84 : 5,869.27 = 1,280.71 : x
  2. Step 2: Convert to fraction form
    3,913.84/5,869.27 = 1,280.71/x
  3. Step 3: Cross multiply
    3,913.84x = 5,869.27 × 1,280.71
  4. Step 4: Simplify right side
    3,913.84x = 7,516,832.78
  5. Step 5: Solve for x
    x = 7,516,832.78/3,913.84
  6. Step 6: Final answer
    x = 1,920.58

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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.