Home / 4,921.86-6,789.06-3,154.62

Finding the Fourth Proportional to 4,921.86, 6,789.06 and 3,154.62

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Solution

The fourth proportional to 4,921.86, 6,789.06 and 3,154.62 is: 4,351.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.86 : 6,789.06 = 3,154.62 : x
  2. Step 2: Convert to fraction form
    4,921.86/6,789.06 = 3,154.62/x
  3. Step 3: Cross multiply
    4,921.86x = 6,789.06 × 3,154.62
  4. Step 4: Simplify right side
    4,921.86x = 21,416,904.46
  5. Step 5: Solve for x
    x = 21,416,904.46/4,921.86
  6. Step 6: Final answer
    x = 4,351.38

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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.