Home / 6,721.20-10,081.40-1,790.96

Finding the Fourth Proportional to 6,721.20, 10,081.40 and 1,790.96

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Solution

The fourth proportional to 6,721.20, 10,081.40 and 1,790.96 is: 2,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.20 : 10,081.40 = 1,790.96 : x
  2. Step 2: Convert to fraction form
    6,721.20/10,081.40 = 1,790.96/x
  3. Step 3: Cross multiply
    6,721.20x = 10,081.40 × 1,790.96
  4. Step 4: Simplify right side
    6,721.20x = 18,055,384.14
  5. Step 5: Solve for x
    x = 18,055,384.14/6,721.20
  6. Step 6: Final answer
    x = 2,686.33

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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.