Home / 2,226.95-3,072.57-1,387.79

Finding the Fourth Proportional to 2,226.95, 3,072.57 and 1,387.79

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Solution

The fourth proportional to 2,226.95, 3,072.57 and 1,387.79 is: 1,914.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,226.95 : 3,072.57 = 1,387.79 : x
  2. Step 2: Convert to fraction form
    2,226.95/3,072.57 = 1,387.79/x
  3. Step 3: Cross multiply
    2,226.95x = 3,072.57 × 1,387.79
  4. Step 4: Simplify right side
    2,226.95x = 4,264,066.56
  5. Step 5: Solve for x
    x = 4,264,066.56/2,226.95
  6. Step 6: Final answer
    x = 1,914.76

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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.