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Finding the Fourth Proportional to 11,801.71, 17,703.49 and 4,778.40

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Solution

The fourth proportional to 11,801.71, 17,703.49 and 4,778.40 is: 7,167.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,801.71 : 17,703.49 = 4,778.40 : x
  2. Step 2: Convert to fraction form
    11,801.71/17,703.49 = 4,778.40/x
  3. Step 3: Cross multiply
    11,801.71x = 17,703.49 × 4,778.40
  4. Step 4: Simplify right side
    11,801.71x = 84,594,356.62
  5. Step 5: Solve for x
    x = 84,594,356.62/11,801.71
  6. Step 6: Final answer
    x = 7,167.97

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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.