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Finding the Fourth Proportional to 4,985.86, 6,879.62 and 2,996.86

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Solution

The fourth proportional to 4,985.86, 6,879.62 and 2,996.86 is: 4,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.86 : 6,879.62 = 2,996.86 : x
  2. Step 2: Convert to fraction form
    4,985.86/6,879.62 = 2,996.86/x
  3. Step 3: Cross multiply
    4,985.86x = 6,879.62 × 2,996.86
  4. Step 4: Simplify right side
    4,985.86x = 20,617,257.99
  5. Step 5: Solve for x
    x = 20,617,257.99/4,985.86
  6. Step 6: Final answer
    x = 4,135.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.