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Finding the Fourth Proportional to 4,809.70, 7,214.55 and 2,217.70

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Solution

The fourth proportional to 4,809.70, 7,214.55 and 2,217.70 is: 3,326.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,809.70 : 7,214.55 = 2,217.70 : x
  2. Step 2: Convert to fraction form
    4,809.70/7,214.55 = 2,217.70/x
  3. Step 3: Cross multiply
    4,809.70x = 7,214.55 × 2,217.70
  4. Step 4: Simplify right side
    4,809.70x = 15,999,707.54
  5. Step 5: Solve for x
    x = 15,999,707.54/4,809.70
  6. Step 6: Final answer
    x = 3,326.55

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Half scale
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Double scale
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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.