Home / 7,854.36-11,781.23-2,660.23

Finding the Fourth Proportional to 7,854.36, 11,781.23 and 2,660.23

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Solution

The fourth proportional to 7,854.36, 11,781.23 and 2,660.23 is: 3,990.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.36 : 11,781.23 = 2,660.23 : x
  2. Step 2: Convert to fraction form
    7,854.36/11,781.23 = 2,660.23/x
  3. Step 3: Cross multiply
    7,854.36x = 11,781.23 × 2,660.23
  4. Step 4: Simplify right side
    7,854.36x = 31,340,781.48
  5. Step 5: Solve for x
    x = 31,340,781.48/7,854.36
  6. Step 6: Final answer
    x = 3,990.24

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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.