Home / 8,851.11-12,215.70-5,716.41

Finding the Fourth Proportional to 8,851.11, 12,215.70 and 5,716.41

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Solution

The fourth proportional to 8,851.11, 12,215.70 and 5,716.41 is: 7,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,851.11 : 12,215.70 = 5,716.41 : x
  2. Step 2: Convert to fraction form
    8,851.11/12,215.70 = 5,716.41/x
  3. Step 3: Cross multiply
    8,851.11x = 12,215.70 × 5,716.41
  4. Step 4: Simplify right side
    8,851.11x = 69,829,949.64
  5. Step 5: Solve for x
    x = 69,829,949.64/8,851.11
  6. Step 6: Final answer
    x = 7,889.40

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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.