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Finding the Fourth Proportional to 5,910.78, 8,866.71 and 2,987.22

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Solution

The fourth proportional to 5,910.78, 8,866.71 and 2,987.22 is: 4,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,910.78 : 8,866.71 = 2,987.22 : x
  2. Step 2: Convert to fraction form
    5,910.78/8,866.71 = 2,987.22/x
  3. Step 3: Cross multiply
    5,910.78x = 8,866.71 × 2,987.22
  4. Step 4: Simplify right side
    5,910.78x = 26,486,813.45
  5. Step 5: Solve for x
    x = 26,486,813.45/5,910.78
  6. Step 6: Final answer
    x = 4,481.10

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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.