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Finding the Fourth Proportional to 4,759.70, 7,139.55 and 4,183.70

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Solution

The fourth proportional to 4,759.70, 7,139.55 and 4,183.70 is: 6,275.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,759.70 : 7,139.55 = 4,183.70 : x
  2. Step 2: Convert to fraction form
    4,759.70/7,139.55 = 4,183.70/x
  3. Step 3: Cross multiply
    4,759.70x = 7,139.55 × 4,183.70
  4. Step 4: Simplify right side
    4,759.70x = 29,869,735.34
  5. Step 5: Solve for x
    x = 29,869,735.34/4,759.70
  6. Step 6: Final answer
    x = 6,275.55

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Similar ratio
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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.