Home / 7,852.50-11,781.78-2,658.36

Finding the Fourth Proportional to 7,852.50, 11,781.78 and 2,658.36

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Solution

The fourth proportional to 7,852.50, 11,781.78 and 2,658.36 is: 3,988.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,852.50 : 11,781.78 = 2,658.36 : x
  2. Step 2: Convert to fraction form
    7,852.50/11,781.78 = 2,658.36/x
  3. Step 3: Cross multiply
    7,852.50x = 11,781.78 × 2,658.36
  4. Step 4: Simplify right side
    7,852.50x = 31,320,212.68
  5. Step 5: Solve for x
    x = 31,320,212.68/7,852.50
  6. Step 6: Final answer
    x = 3,988.57

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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.