Home / 7,826.15-11,739.65-1,982.81

Finding the Fourth Proportional to 7,826.15, 11,739.65 and 1,982.81

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Solution

The fourth proportional to 7,826.15, 11,739.65 and 1,982.81 is: 2,974.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,826.15 : 11,739.65 = 1,982.81 : x
  2. Step 2: Convert to fraction form
    7,826.15/11,739.65 = 1,982.81/x
  3. Step 3: Cross multiply
    7,826.15x = 11,739.65 × 1,982.81
  4. Step 4: Simplify right side
    7,826.15x = 23,277,426.80
  5. Step 5: Solve for x
    x = 23,277,426.80/7,826.15
  6. Step 6: Final answer
    x = 2,974.32

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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.