Home / 5,247.60-7,871.36-1,961.52

Finding the Fourth Proportional to 5,247.60, 7,871.36 and 1,961.52

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Solution

The fourth proportional to 5,247.60, 7,871.36 and 1,961.52 is: 2,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.60 : 7,871.36 = 1,961.52 : x
  2. Step 2: Convert to fraction form
    5,247.60/7,871.36 = 1,961.52/x
  3. Step 3: Cross multiply
    5,247.60x = 7,871.36 × 1,961.52
  4. Step 4: Simplify right side
    5,247.60x = 15,439,830.07
  5. Step 5: Solve for x
    x = 15,439,830.07/5,247.60
  6. Step 6: Final answer
    x = 2,942.27

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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.