Home / 7,820.19-11,729.34-1,976.85

Finding the Fourth Proportional to 7,820.19, 11,729.34 and 1,976.85

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Solution

The fourth proportional to 7,820.19, 11,729.34 and 1,976.85 is: 2,965.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.19 : 11,729.34 = 1,976.85 : x
  2. Step 2: Convert to fraction form
    7,820.19/11,729.34 = 1,976.85/x
  3. Step 3: Cross multiply
    7,820.19x = 11,729.34 × 1,976.85
  4. Step 4: Simplify right side
    7,820.19x = 23,187,145.78
  5. Step 5: Solve for x
    x = 23,187,145.78/7,820.19
  6. Step 6: Final answer
    x = 2,965.04

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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.