Home / 2,257.72-3,115.89-1,313.44

Finding the Fourth Proportional to 2,257.72, 3,115.89 and 1,313.44

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Solution

The fourth proportional to 2,257.72, 3,115.89 and 1,313.44 is: 1,812.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.72 : 3,115.89 = 1,313.44 : x
  2. Step 2: Convert to fraction form
    2,257.72/3,115.89 = 1,313.44/x
  3. Step 3: Cross multiply
    2,257.72x = 3,115.89 × 1,313.44
  4. Step 4: Simplify right side
    2,257.72x = 4,092,539.23
  5. Step 5: Solve for x
    x = 4,092,539.23/2,257.72
  6. Step 6: Final answer
    x = 1,812.68

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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.