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Finding the Fourth Proportional to 2,618.16, 3,927.44 and 862.48

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Solution

The fourth proportional to 2,618.16, 3,927.44 and 862.48 is: 1,293.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.16 : 3,927.44 = 862.48 : x
  2. Step 2: Convert to fraction form
    2,618.16/3,927.44 = 862.48/x
  3. Step 3: Cross multiply
    2,618.16x = 3,927.44 × 862.48
  4. Step 4: Simplify right side
    2,618.16x = 3,387,338.45
  5. Step 5: Solve for x
    x = 3,387,338.45/2,618.16
  6. Step 6: Final answer
    x = 1,293.79

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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.