Home / 5,253.36-7,880.82-1,921.78

Finding the Fourth Proportional to 5,253.36, 7,880.82 and 1,921.78

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Solution

The fourth proportional to 5,253.36, 7,880.82 and 1,921.78 is: 2,882.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,253.36 : 7,880.82 = 1,921.78 : x
  2. Step 2: Convert to fraction form
    5,253.36/7,880.82 = 1,921.78/x
  3. Step 3: Cross multiply
    5,253.36x = 7,880.82 × 1,921.78
  4. Step 4: Simplify right side
    5,253.36x = 15,145,202.26
  5. Step 5: Solve for x
    x = 15,145,202.26/5,253.36
  6. Step 6: Final answer
    x = 2,882.96

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1.5x scale

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.