Home / 4,759.92-7,138.51-1,639.80

Finding the Fourth Proportional to 4,759.92, 7,138.51 and 1,639.80

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Solution

The fourth proportional to 4,759.92, 7,138.51 and 1,639.80 is: 2,459.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,759.92 : 7,138.51 = 1,639.80 : x
  2. Step 2: Convert to fraction form
    4,759.92/7,138.51 = 1,639.80/x
  3. Step 3: Cross multiply
    4,759.92x = 7,138.51 × 1,639.80
  4. Step 4: Simplify right side
    4,759.92x = 11,705,728.70
  5. Step 5: Solve for x
    x = 11,705,728.70/4,759.92
  6. Step 6: Final answer
    x = 2,459.23

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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.