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Finding the Fourth Proportional to 5,219.70, 7,829.55 and 4,976.70

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Solution

The fourth proportional to 5,219.70, 7,829.55 and 4,976.70 is: 7,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.70 : 7,829.55 = 4,976.70 : x
  2. Step 2: Convert to fraction form
    5,219.70/7,829.55 = 4,976.70/x
  3. Step 3: Cross multiply
    5,219.70x = 7,829.55 × 4,976.70
  4. Step 4: Simplify right side
    5,219.70x = 38,965,321.49
  5. Step 5: Solve for x
    x = 38,965,321.49/5,219.70
  6. Step 6: Final answer
    x = 7,465.05

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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.