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Finding the Fourth Proportional to 9,001.56, 12,420.16 and 5,222.54

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Solution

The fourth proportional to 9,001.56, 12,420.16 and 5,222.54 is: 7,205.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,001.56 : 12,420.16 = 5,222.54 : x
  2. Step 2: Convert to fraction form
    9,001.56/12,420.16 = 5,222.54/x
  3. Step 3: Cross multiply
    9,001.56x = 12,420.16 × 5,222.54
  4. Step 4: Simplify right side
    9,001.56x = 64,864,720.31
  5. Step 5: Solve for x
    x = 64,864,720.31/9,001.56
  6. Step 6: Final answer
    x = 7,205.94

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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.