Home / 5,214.78-7,202.79-4,221.18

Finding the Fourth Proportional to 5,214.78, 7,202.79 and 4,221.18

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Solution

The fourth proportional to 5,214.78, 7,202.79 and 4,221.18 is: 5,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.78 : 7,202.79 = 4,221.18 : x
  2. Step 2: Convert to fraction form
    5,214.78/7,202.79 = 4,221.18/x
  3. Step 3: Cross multiply
    5,214.78x = 7,202.79 × 4,221.18
  4. Step 4: Simplify right side
    5,214.78x = 30,404,273.09
  5. Step 5: Solve for x
    x = 30,404,273.09/5,214.78
  6. Step 6: Final answer
    x = 5,830.40

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Half scale
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Double scale
Find fourth proportional to 5,215.78, 7,204.17 and 4,222.18
Similar ratio
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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.