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Finding the Fourth Proportional to 1,679.48, 2,507.90 and 1,371.94

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Solution

The fourth proportional to 1,679.48, 2,507.90 and 1,371.94 is: 2,048.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.48 : 2,507.90 = 1,371.94 : x
  2. Step 2: Convert to fraction form
    1,679.48/2,507.90 = 1,371.94/x
  3. Step 3: Cross multiply
    1,679.48x = 2,507.90 × 1,371.94
  4. Step 4: Simplify right side
    1,679.48x = 3,440,691.76
  5. Step 5: Solve for x
    x = 3,440,691.76/1,679.48
  6. Step 6: Final answer
    x = 2,048.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.