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Finding the Fourth Proportional to 9,189.71, 13,786.87 and 2,950.28

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Solution

The fourth proportional to 9,189.71, 13,786.87 and 2,950.28 is: 4,426.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.71 : 13,786.87 = 2,950.28 : x
  2. Step 2: Convert to fraction form
    9,189.71/13,786.87 = 2,950.28/x
  3. Step 3: Cross multiply
    9,189.71x = 13,786.87 × 2,950.28
  4. Step 4: Simplify right side
    9,189.71x = 40,675,050.51
  5. Step 5: Solve for x
    x = 40,675,050.51/9,189.71
  6. Step 6: Final answer
    x = 4,426.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.