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Finding the Fourth Proportional to 4,991.70, 6,888.12 and 2,895.96

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Solution

The fourth proportional to 4,991.70, 6,888.12 and 2,895.96 is: 3,996.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.70 : 6,888.12 = 2,895.96 : x
  2. Step 2: Convert to fraction form
    4,991.70/6,888.12 = 2,895.96/x
  3. Step 3: Cross multiply
    4,991.70x = 6,888.12 × 2,895.96
  4. Step 4: Simplify right side
    4,991.70x = 19,947,720.00
  5. Step 5: Solve for x
    x = 19,947,720.00/4,991.70
  6. Step 6: Final answer
    x = 3,996.18

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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.