Home / 3,161.54-4,358.81-2,165.09

Finding the Fourth Proportional to 3,161.54, 4,358.81 and 2,165.09

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Solution

The fourth proportional to 3,161.54, 4,358.81 and 2,165.09 is: 2,985.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.54 : 4,358.81 = 2,165.09 : x
  2. Step 2: Convert to fraction form
    3,161.54/4,358.81 = 2,165.09/x
  3. Step 3: Cross multiply
    3,161.54x = 4,358.81 × 2,165.09
  4. Step 4: Simplify right side
    3,161.54x = 9,437,183.32
  5. Step 5: Solve for x
    x = 9,437,183.32/3,161.54
  6. Step 6: Final answer
    x = 2,985.00

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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.