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Finding the Fourth Proportional to 9,360.12, 12,919.54 and 5,821.22

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Solution

The fourth proportional to 9,360.12, 12,919.54 and 5,821.22 is: 8,034.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.12 : 12,919.54 = 5,821.22 : x
  2. Step 2: Convert to fraction form
    9,360.12/12,919.54 = 5,821.22/x
  3. Step 3: Cross multiply
    9,360.12x = 12,919.54 × 5,821.22
  4. Step 4: Simplify right side
    9,360.12x = 75,207,484.64
  5. Step 5: Solve for x
    x = 75,207,484.64/9,360.12
  6. Step 6: Final answer
    x = 8,034.88

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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.