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Finding the Fourth Proportional to 7,893.32, 11,781.86 and 7,235.82

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Solution

The fourth proportional to 7,893.32, 11,781.86 and 7,235.82 is: 10,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.32 : 11,781.86 = 7,235.82 : x
  2. Step 2: Convert to fraction form
    7,893.32/11,781.86 = 7,235.82/x
  3. Step 3: Cross multiply
    7,893.32x = 11,781.86 × 7,235.82
  4. Step 4: Simplify right side
    7,893.32x = 85,251,382.05
  5. Step 5: Solve for x
    x = 85,251,382.05/7,893.32
  6. Step 6: Final answer
    x = 10,800.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.