Home / 2,277.20-3,145.56-2,212.40

Finding the Fourth Proportional to 2,277.20, 3,145.56 and 2,212.40

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Solution

The fourth proportional to 2,277.20, 3,145.56 and 2,212.40 is: 3,056.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,277.20 : 3,145.56 = 2,212.40 : x
  2. Step 2: Convert to fraction form
    2,277.20/3,145.56 = 2,212.40/x
  3. Step 3: Cross multiply
    2,277.20x = 3,145.56 × 2,212.40
  4. Step 4: Simplify right side
    2,277.20x = 6,959,236.94
  5. Step 5: Solve for x
    x = 6,959,236.94/2,277.20
  6. Step 6: Final answer
    x = 3,056.05

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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.