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Finding the Fourth Proportional to 4,992.81, 6,890.72 and 2,896.89

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Solution

The fourth proportional to 4,992.81, 6,890.72 and 2,896.89 is: 3,998.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,992.81 : 6,890.72 = 2,896.89 : x
  2. Step 2: Convert to fraction form
    4,992.81/6,890.72 = 2,896.89/x
  3. Step 3: Cross multiply
    4,992.81x = 6,890.72 × 2,896.89
  4. Step 4: Simplify right side
    4,992.81x = 19,961,643.38
  5. Step 5: Solve for x
    x = 19,961,643.38/4,992.81
  6. Step 6: Final answer
    x = 3,998.08

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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.