Home / 8,811.68-12,156.77-5,625.09

Finding the Fourth Proportional to 8,811.68, 12,156.77 and 5,625.09

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Solution

The fourth proportional to 8,811.68, 12,156.77 and 5,625.09 is: 7,760.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.68 : 12,156.77 = 5,625.09 : x
  2. Step 2: Convert to fraction form
    8,811.68/12,156.77 = 5,625.09/x
  3. Step 3: Cross multiply
    8,811.68x = 12,156.77 × 5,625.09
  4. Step 4: Simplify right side
    8,811.68x = 68,382,897.23
  5. Step 5: Solve for x
    x = 68,382,897.23/8,811.68
  6. Step 6: Final answer
    x = 7,760.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.