Home / 5,311.20-7,967.20-1,415.52

Finding the Fourth Proportional to 5,311.20, 7,967.20 and 1,415.52

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Solution

The fourth proportional to 5,311.20, 7,967.20 and 1,415.52 is: 2,123.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.20 : 7,967.20 = 1,415.52 : x
  2. Step 2: Convert to fraction form
    5,311.20/7,967.20 = 1,415.52/x
  3. Step 3: Cross multiply
    5,311.20x = 7,967.20 × 1,415.52
  4. Step 4: Simplify right side
    5,311.20x = 11,277,730.94
  5. Step 5: Solve for x
    x = 11,277,730.94/5,311.20
  6. Step 6: Final answer
    x = 2,123.39

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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.