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Finding the Fourth Proportional to 7,885.59, 11,828.39 and 2,691.51

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Solution

The fourth proportional to 7,885.59, 11,828.39 and 2,691.51 is: 4,037.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.59 : 11,828.39 = 2,691.51 : x
  2. Step 2: Convert to fraction form
    7,885.59/11,828.39 = 2,691.51/x
  3. Step 3: Cross multiply
    7,885.59x = 11,828.39 × 2,691.51
  4. Step 4: Simplify right side
    7,885.59x = 31,836,216.51
  5. Step 5: Solve for x
    x = 31,836,216.51/7,885.59
  6. Step 6: Final answer
    x = 4,037.27

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Similar ratio
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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.