Home / 7,675.29-11,511.79-2,128.06

Finding the Fourth Proportional to 7,675.29, 11,511.79 and 2,128.06

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Solution

The fourth proportional to 7,675.29, 11,511.79 and 2,128.06 is: 3,191.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,675.29 : 11,511.79 = 2,128.06 : x
  2. Step 2: Convert to fraction form
    7,675.29/11,511.79 = 2,128.06/x
  3. Step 3: Cross multiply
    7,675.29x = 11,511.79 × 2,128.06
  4. Step 4: Simplify right side
    7,675.29x = 24,497,722.27
  5. Step 5: Solve for x
    x = 24,497,722.27/7,675.29
  6. Step 6: Final answer
    x = 3,191.77

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1.5x scale

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.