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Finding the Fourth Proportional to 3,335.80, 5,003.70 and 2,687.80

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Solution

The fourth proportional to 3,335.80, 5,003.70 and 2,687.80 is: 4,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,335.80 : 5,003.70 = 2,687.80 : x
  2. Step 2: Convert to fraction form
    3,335.80/5,003.70 = 2,687.80/x
  3. Step 3: Cross multiply
    3,335.80x = 5,003.70 × 2,687.80
  4. Step 4: Simplify right side
    3,335.80x = 13,448,944.86
  5. Step 5: Solve for x
    x = 13,448,944.86/3,335.80
  6. Step 6: Final answer
    x = 4,031.70

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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.