Home / 4,678.73-6,456.86-2,689.91

Finding the Fourth Proportional to 4,678.73, 6,456.86 and 2,689.91

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Solution

The fourth proportional to 4,678.73, 6,456.86 and 2,689.91 is: 3,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.73 : 6,456.86 = 2,689.91 : x
  2. Step 2: Convert to fraction form
    4,678.73/6,456.86 = 2,689.91/x
  3. Step 3: Cross multiply
    4,678.73x = 6,456.86 × 2,689.91
  4. Step 4: Simplify right side
    4,678.73x = 17,368,372.28
  5. Step 5: Solve for x
    x = 17,368,372.28/4,678.73
  6. Step 6: Final answer
    x = 3,712.20

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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.