Home / 3,921.53-5,880.40-2,278.55

Finding the Fourth Proportional to 3,921.53, 5,880.40 and 2,278.55

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Solution

The fourth proportional to 3,921.53, 5,880.40 and 2,278.55 is: 3,416.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.53 : 5,880.40 = 2,278.55 : x
  2. Step 2: Convert to fraction form
    3,921.53/5,880.40 = 2,278.55/x
  3. Step 3: Cross multiply
    3,921.53x = 5,880.40 × 2,278.55
  4. Step 4: Simplify right side
    3,921.53x = 13,398,750.32
  5. Step 5: Solve for x
    x = 13,398,750.32/3,921.53
  6. Step 6: Final answer
    x = 3,416.72

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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.