Home / 4,900.88-6,759.86-3,131.70

Finding the Fourth Proportional to 4,900.88, 6,759.86 and 3,131.70

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Solution

The fourth proportional to 4,900.88, 6,759.86 and 3,131.70 is: 4,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,900.88 : 6,759.86 = 3,131.70 : x
  2. Step 2: Convert to fraction form
    4,900.88/6,759.86 = 3,131.70/x
  3. Step 3: Cross multiply
    4,900.88x = 6,759.86 × 3,131.70
  4. Step 4: Simplify right side
    4,900.88x = 21,169,853.56
  5. Step 5: Solve for x
    x = 21,169,853.56/4,900.88
  6. Step 6: Final answer
    x = 4,319.60

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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.