Home / 2,212.96-3,051.12-1,861.60

Finding the Fourth Proportional to 2,212.96, 3,051.12 and 1,861.60

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Solution

The fourth proportional to 2,212.96, 3,051.12 and 1,861.60 is: 2,566.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.96 : 3,051.12 = 1,861.60 : x
  2. Step 2: Convert to fraction form
    2,212.96/3,051.12 = 1,861.60/x
  3. Step 3: Cross multiply
    2,212.96x = 3,051.12 × 1,861.60
  4. Step 4: Simplify right side
    2,212.96x = 5,679,964.99
  5. Step 5: Solve for x
    x = 5,679,964.99/2,212.96
  6. Step 6: Final answer
    x = 2,566.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.