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Finding the Fourth Proportional to 3,789.84, 5,656.97 and 3,511.89

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Solution

The fourth proportional to 3,789.84, 5,656.97 and 3,511.89 is: 5,242.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.84 : 5,656.97 = 3,511.89 : x
  2. Step 2: Convert to fraction form
    3,789.84/5,656.97 = 3,511.89/x
  3. Step 3: Cross multiply
    3,789.84x = 5,656.97 × 3,511.89
  4. Step 4: Simplify right side
    3,789.84x = 19,866,638.81
  5. Step 5: Solve for x
    x = 19,866,638.81/3,789.84
  6. Step 6: Final answer
    x = 5,242.08

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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.