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Finding the Fourth Proportional to 2,399.68, 3,314.72 and 1,935.68

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Solution

The fourth proportional to 2,399.68, 3,314.72 and 1,935.68 is: 2,673.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.68 : 3,314.72 = 1,935.68 : x
  2. Step 2: Convert to fraction form
    2,399.68/3,314.72 = 1,935.68/x
  3. Step 3: Cross multiply
    2,399.68x = 3,314.72 × 1,935.68
  4. Step 4: Simplify right side
    2,399.68x = 6,416,237.21
  5. Step 5: Solve for x
    x = 6,416,237.21/2,399.68
  6. Step 6: Final answer
    x = 2,673.79

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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.