Home / 3,278.68-4,913.76-1,328.60

Finding the Fourth Proportional to 3,278.68, 4,913.76 and 1,328.60

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Solution

The fourth proportional to 3,278.68, 4,913.76 and 1,328.60 is: 1,991.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.68 : 4,913.76 = 1,328.60 : x
  2. Step 2: Convert to fraction form
    3,278.68/4,913.76 = 1,328.60/x
  3. Step 3: Cross multiply
    3,278.68x = 4,913.76 × 1,328.60
  4. Step 4: Simplify right side
    3,278.68x = 6,528,438.80
  5. Step 5: Solve for x
    x = 6,528,438.80/3,278.68
  6. Step 6: Final answer
    x = 1,991.18

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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.