Home / 9,187.96-12,685.46-8,191.51

Finding the Fourth Proportional to 9,187.96, 12,685.46 and 8,191.51

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Solution

The fourth proportional to 9,187.96, 12,685.46 and 8,191.51 is: 11,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.96 : 12,685.46 = 8,191.51 : x
  2. Step 2: Convert to fraction form
    9,187.96/12,685.46 = 8,191.51/x
  3. Step 3: Cross multiply
    9,187.96x = 12,685.46 × 8,191.51
  4. Step 4: Simplify right side
    9,187.96x = 103,913,072.44
  5. Step 5: Solve for x
    x = 103,913,072.44/9,187.96
  6. Step 6: Final answer
    x = 11,309.70

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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.