Home / 3,913.68-5,869.93-1,281.18

Finding the Fourth Proportional to 3,913.68, 5,869.93 and 1,281.18

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Solution

The fourth proportional to 3,913.68, 5,869.93 and 1,281.18 is: 1,921.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.68 : 5,869.93 = 1,281.18 : x
  2. Step 2: Convert to fraction form
    3,913.68/5,869.93 = 1,281.18/x
  3. Step 3: Cross multiply
    3,913.68x = 5,869.93 × 1,281.18
  4. Step 4: Simplify right side
    3,913.68x = 7,520,436.92
  5. Step 5: Solve for x
    x = 7,520,436.92/3,913.68
  6. Step 6: Final answer
    x = 1,921.58

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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.