Home / 9,001.72-12,420.38-5,222.69

Finding the Fourth Proportional to 9,001.72, 12,420.38 and 5,222.69

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Solution

The fourth proportional to 9,001.72, 12,420.38 and 5,222.69 is: 7,206.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,001.72 : 12,420.38 = 5,222.69 : x
  2. Step 2: Convert to fraction form
    9,001.72/12,420.38 = 5,222.69/x
  3. Step 3: Cross multiply
    9,001.72x = 12,420.38 × 5,222.69
  4. Step 4: Simplify right side
    9,001.72x = 64,867,794.42
  5. Step 5: Solve for x
    x = 64,867,794.42/9,001.72
  6. Step 6: Final answer
    x = 7,206.16

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Double scale
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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.