Home / 8,756.97-12,087.74-5,171.94

Finding the Fourth Proportional to 8,756.97, 12,087.74 and 5,171.94

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Solution

The fourth proportional to 8,756.97, 12,087.74 and 5,171.94 is: 7,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.97 : 12,087.74 = 5,171.94 : x
  2. Step 2: Convert to fraction form
    8,756.97/12,087.74 = 5,171.94/x
  3. Step 3: Cross multiply
    8,756.97x = 12,087.74 × 5,171.94
  4. Step 4: Simplify right side
    8,756.97x = 62,517,040.16
  5. Step 5: Solve for x
    x = 62,517,040.16/8,756.97
  6. Step 6: Final answer
    x = 7,139.12

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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.