Home / 1,676.72-2,316.09-1,397.87

Finding the Fourth Proportional to 1,676.72, 2,316.09 and 1,397.87

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Solution

The fourth proportional to 1,676.72, 2,316.09 and 1,397.87 is: 1,930.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,676.72 : 2,316.09 = 1,397.87 : x
  2. Step 2: Convert to fraction form
    1,676.72/2,316.09 = 1,397.87/x
  3. Step 3: Cross multiply
    1,676.72x = 2,316.09 × 1,397.87
  4. Step 4: Simplify right side
    1,676.72x = 3,237,592.73
  5. Step 5: Solve for x
    x = 3,237,592.73/1,676.72
  6. Step 6: Final answer
    x = 1,930.91

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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.