Home / 3,579.40-4,940.61-2,162.87

Finding the Fourth Proportional to 3,579.40, 4,940.61 and 2,162.87

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Solution

The fourth proportional to 3,579.40, 4,940.61 and 2,162.87 is: 2,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.40 : 4,940.61 = 2,162.87 : x
  2. Step 2: Convert to fraction form
    3,579.40/4,940.61 = 2,162.87/x
  3. Step 3: Cross multiply
    3,579.40x = 4,940.61 × 2,162.87
  4. Step 4: Simplify right side
    3,579.40x = 10,685,897.15
  5. Step 5: Solve for x
    x = 10,685,897.15/3,579.40
  6. Step 6: Final answer
    x = 2,985.39

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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.