Home / 10,212.90-15,319.44-2,817.78

Finding the Fourth Proportional to 10,212.90, 15,319.44 and 2,817.78

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Solution

The fourth proportional to 10,212.90, 15,319.44 and 2,817.78 is: 4,226.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.90 : 15,319.44 = 2,817.78 : x
  2. Step 2: Convert to fraction form
    10,212.90/15,319.44 = 2,817.78/x
  3. Step 3: Cross multiply
    10,212.90x = 15,319.44 × 2,817.78
  4. Step 4: Simplify right side
    10,212.90x = 43,166,811.64
  5. Step 5: Solve for x
    x = 43,166,811.64/10,212.90
  6. Step 6: Final answer
    x = 4,226.69

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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.