Home / 4,678.76-6,456.46-2,687.92

Finding the Fourth Proportional to 4,678.76, 6,456.46 and 2,687.92

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Solution

The fourth proportional to 4,678.76, 6,456.46 and 2,687.92 is: 3,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.76 : 6,456.46 = 2,687.92 : x
  2. Step 2: Convert to fraction form
    4,678.76/6,456.46 = 2,687.92/x
  3. Step 3: Cross multiply
    4,678.76x = 6,456.46 × 2,687.92
  4. Step 4: Simplify right side
    4,678.76x = 17,354,447.96
  5. Step 5: Solve for x
    x = 17,354,447.96/4,678.76
  6. Step 6: Final answer
    x = 3,709.20

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1.5x scale

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.