Home / 9,222.78-12,727.47-5,245.20

Finding the Fourth Proportional to 9,222.78, 12,727.47 and 5,245.20

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Solution

The fourth proportional to 9,222.78, 12,727.47 and 5,245.20 is: 7,238.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,222.78 : 12,727.47 = 5,245.20 : x
  2. Step 2: Convert to fraction form
    9,222.78/12,727.47 = 5,245.20/x
  3. Step 3: Cross multiply
    9,222.78x = 12,727.47 × 5,245.20
  4. Step 4: Simplify right side
    9,222.78x = 66,758,125.64
  5. Step 5: Solve for x
    x = 66,758,125.64/9,222.78
  6. Step 6: Final answer
    x = 7,238.40

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.