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Finding the Fourth Proportional to 7,884.11, 11,826.47 and 2,689.99

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Solution

The fourth proportional to 7,884.11, 11,826.47 and 2,689.99 is: 4,035.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,884.11 : 11,826.47 = 2,689.99 : x
  2. Step 2: Convert to fraction form
    7,884.11/11,826.47 = 2,689.99/x
  3. Step 3: Cross multiply
    7,884.11x = 11,826.47 × 2,689.99
  4. Step 4: Simplify right side
    7,884.11x = 31,813,026.90
  5. Step 5: Solve for x
    x = 31,813,026.90/7,884.11
  6. Step 6: Final answer
    x = 4,035.08

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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.