Home / 4,921.62-6,790.13-3,154.20

Finding the Fourth Proportional to 4,921.62, 6,790.13 and 3,154.20

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Solution

The fourth proportional to 4,921.62, 6,790.13 and 3,154.20 is: 4,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.62 : 6,790.13 = 3,154.20 : x
  2. Step 2: Convert to fraction form
    4,921.62/6,790.13 = 3,154.20/x
  3. Step 3: Cross multiply
    4,921.62x = 6,790.13 × 3,154.20
  4. Step 4: Simplify right side
    4,921.62x = 21,417,378.32
  5. Step 5: Solve for x
    x = 21,417,378.32/4,921.62
  6. Step 6: Final answer
    x = 4,351.70

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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.