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Finding the Fourth Proportional to 2,999.91, 4,140.41 and 1,881.81

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Solution

The fourth proportional to 2,999.91, 4,140.41 and 1,881.81 is: 2,597.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.91 : 4,140.41 = 1,881.81 : x
  2. Step 2: Convert to fraction form
    2,999.91/4,140.41 = 1,881.81/x
  3. Step 3: Cross multiply
    2,999.91x = 4,140.41 × 1,881.81
  4. Step 4: Simplify right side
    2,999.91x = 7,791,455.53
  5. Step 5: Solve for x
    x = 7,791,455.53/2,999.91
  6. Step 6: Final answer
    x = 2,597.23

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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.