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Finding the Fourth Proportional to 9,007.11, 12,427.80 and 5,228.10

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Solution

The fourth proportional to 9,007.11, 12,427.80 and 5,228.10 is: 7,213.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,007.11 : 12,427.80 = 5,228.10 : x
  2. Step 2: Convert to fraction form
    9,007.11/12,427.80 = 5,228.10/x
  3. Step 3: Cross multiply
    9,007.11x = 12,427.80 × 5,228.10
  4. Step 4: Simplify right side
    9,007.11x = 64,973,781.18
  5. Step 5: Solve for x
    x = 64,973,781.18/9,007.11
  6. Step 6: Final answer
    x = 7,213.61

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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.