Home / 8,072.11-11,139.75-4,885.98

Finding the Fourth Proportional to 8,072.11, 11,139.75 and 4,885.98

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Solution

The fourth proportional to 8,072.11, 11,139.75 and 4,885.98 is: 6,742.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.11 : 11,139.75 = 4,885.98 : x
  2. Step 2: Convert to fraction form
    8,072.11/11,139.75 = 4,885.98/x
  3. Step 3: Cross multiply
    8,072.11x = 11,139.75 × 4,885.98
  4. Step 4: Simplify right side
    8,072.11x = 54,428,646.00
  5. Step 5: Solve for x
    x = 54,428,646.00/8,072.11
  6. Step 6: Final answer
    x = 6,742.81

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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.