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Finding the Fourth Proportional to 9,008.70, 12,431.94 and 4,975.79

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Solution

The fourth proportional to 9,008.70, 12,431.94 and 4,975.79 is: 6,866.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,008.70 : 12,431.94 = 4,975.79 : x
  2. Step 2: Convert to fraction form
    9,008.70/12,431.94 = 4,975.79/x
  3. Step 3: Cross multiply
    9,008.70x = 12,431.94 × 4,975.79
  4. Step 4: Simplify right side
    9,008.70x = 61,858,660.57
  5. Step 5: Solve for x
    x = 61,858,660.57/9,008.70
  6. Step 6: Final answer
    x = 6,866.55

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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.