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Finding the Fourth Proportional to 4,992.77, 6,890.37 and 2,896.90

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Solution

The fourth proportional to 4,992.77, 6,890.37 and 2,896.90 is: 3,997.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.77 : 6,890.37 = 2,896.90 : x
  2. Step 2: Convert to fraction form
    4,992.77/6,890.37 = 2,896.90/x
  3. Step 3: Cross multiply
    4,992.77x = 6,890.37 × 2,896.90
  4. Step 4: Simplify right side
    4,992.77x = 19,960,684.76
  5. Step 5: Solve for x
    x = 19,960,684.76/4,992.77
  6. Step 6: Final answer
    x = 3,997.92

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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.