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Finding the Fourth Proportional to 3,311.68, 4,986.72 and 2,393.48

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Solution

The fourth proportional to 3,311.68, 4,986.72 and 2,393.48 is: 3,604.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.68 : 4,986.72 = 2,393.48 : x
  2. Step 2: Convert to fraction form
    3,311.68/4,986.72 = 2,393.48/x
  3. Step 3: Cross multiply
    3,311.68x = 4,986.72 × 2,393.48
  4. Step 4: Simplify right side
    3,311.68x = 11,935,614.59
  5. Step 5: Solve for x
    x = 11,935,614.59/3,311.68
  6. Step 6: Final answer
    x = 3,604.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.