Home / 2,182.90-3,259.87-2,139.70

Finding the Fourth Proportional to 2,182.90, 3,259.87 and 2,139.70

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Solution

The fourth proportional to 2,182.90, 3,259.87 and 2,139.70 is: 3,195.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,182.90 : 3,259.87 = 2,139.70 : x
  2. Step 2: Convert to fraction form
    2,182.90/3,259.87 = 2,139.70/x
  3. Step 3: Cross multiply
    2,182.90x = 3,259.87 × 2,139.70
  4. Step 4: Simplify right side
    2,182.90x = 6,975,133.14
  5. Step 5: Solve for x
    x = 6,975,133.14/2,182.90
  6. Step 6: Final answer
    x = 3,195.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.