Home / 8,715.12-13,072.28-2,141.36

Finding the Fourth Proportional to 8,715.12, 13,072.28 and 2,141.36

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Solution

The fourth proportional to 8,715.12, 13,072.28 and 2,141.36 is: 3,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.12 : 13,072.28 = 2,141.36 : x
  2. Step 2: Convert to fraction form
    8,715.12/13,072.28 = 2,141.36/x
  3. Step 3: Cross multiply
    8,715.12x = 13,072.28 × 2,141.36
  4. Step 4: Simplify right side
    8,715.12x = 27,992,457.50
  5. Step 5: Solve for x
    x = 27,992,457.50/8,715.12
  6. Step 6: Final answer
    x = 3,211.94

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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.