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Finding the Fourth Proportional to 2,898.66, 3,999.21 and 1,851.06

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Solution

The fourth proportional to 2,898.66, 3,999.21 and 1,851.06 is: 2,553.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.66 : 3,999.21 = 1,851.06 : x
  2. Step 2: Convert to fraction form
    2,898.66/3,999.21 = 1,851.06/x
  3. Step 3: Cross multiply
    2,898.66x = 3,999.21 × 1,851.06
  4. Step 4: Simplify right side
    2,898.66x = 7,402,777.66
  5. Step 5: Solve for x
    x = 7,402,777.66/2,898.66
  6. Step 6: Final answer
    x = 2,553.86

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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.