Home / 10,212.78-15,311.95-3,967.59

Finding the Fourth Proportional to 10,212.78, 15,311.95 and 3,967.59

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Solution

The fourth proportional to 10,212.78, 15,311.95 and 3,967.59 is: 5,948.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.78 : 15,311.95 = 3,967.59 : x
  2. Step 2: Convert to fraction form
    10,212.78/15,311.95 = 3,967.59/x
  3. Step 3: Cross multiply
    10,212.78x = 15,311.95 × 3,967.59
  4. Step 4: Simplify right side
    10,212.78x = 60,751,539.70
  5. Step 5: Solve for x
    x = 60,751,539.70/10,212.78
  6. Step 6: Final answer
    x = 5,948.58

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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.