Home / 2,139.40-3,202.70-1,883.40

Finding the Fourth Proportional to 2,139.40, 3,202.70 and 1,883.40

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Solution

The fourth proportional to 2,139.40, 3,202.70 and 1,883.40 is: 2,819.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.40 : 3,202.70 = 1,883.40 : x
  2. Step 2: Convert to fraction form
    2,139.40/3,202.70 = 1,883.40/x
  3. Step 3: Cross multiply
    2,139.40x = 3,202.70 × 1,883.40
  4. Step 4: Simplify right side
    2,139.40x = 6,031,965.18
  5. Step 5: Solve for x
    x = 6,031,965.18/2,139.40
  6. Step 6: Final answer
    x = 2,819.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.