Home / 3,179.59-4,389.66-2,117.07

Finding the Fourth Proportional to 3,179.59, 4,389.66 and 2,117.07

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Solution

The fourth proportional to 3,179.59, 4,389.66 and 2,117.07 is: 2,922.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.59 : 4,389.66 = 2,117.07 : x
  2. Step 2: Convert to fraction form
    3,179.59/4,389.66 = 2,117.07/x
  3. Step 3: Cross multiply
    3,179.59x = 4,389.66 × 2,117.07
  4. Step 4: Simplify right side
    3,179.59x = 9,293,217.50
  5. Step 5: Solve for x
    x = 9,293,217.50/3,179.59
  6. Step 6: Final answer
    x = 2,922.77

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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.