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Finding the Fourth Proportional to 2,719.72, 3,753.24 and 1,671.80

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Solution

The fourth proportional to 2,719.72, 3,753.24 and 1,671.80 is: 2,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.72 : 3,753.24 = 1,671.80 : x
  2. Step 2: Convert to fraction form
    2,719.72/3,753.24 = 1,671.80/x
  3. Step 3: Cross multiply
    2,719.72x = 3,753.24 × 1,671.80
  4. Step 4: Simplify right side
    2,719.72x = 6,274,666.63
  5. Step 5: Solve for x
    x = 6,274,666.63/2,719.72
  6. Step 6: Final answer
    x = 2,307.10

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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.