Home / 2,646.20-3,960.12-1,818.92

Finding the Fourth Proportional to 2,646.20, 3,960.12 and 1,818.92

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Solution

The fourth proportional to 2,646.20, 3,960.12 and 1,818.92 is: 2,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,646.20 : 3,960.12 = 1,818.92 : x
  2. Step 2: Convert to fraction form
    2,646.20/3,960.12 = 1,818.92/x
  3. Step 3: Cross multiply
    2,646.20x = 3,960.12 × 1,818.92
  4. Step 4: Simplify right side
    2,646.20x = 7,203,141.47
  5. Step 5: Solve for x
    x = 7,203,141.47/2,646.20
  6. Step 6: Final answer
    x = 2,722.07

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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.