Home / 7,721.30-11,581.14-2,790.02

Finding the Fourth Proportional to 7,721.30, 11,581.14 and 2,790.02

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Solution

The fourth proportional to 7,721.30, 11,581.14 and 2,790.02 is: 4,184.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.30 : 11,581.14 = 2,790.02 : x
  2. Step 2: Convert to fraction form
    7,721.30/11,581.14 = 2,790.02/x
  3. Step 3: Cross multiply
    7,721.30x = 11,581.14 × 2,790.02
  4. Step 4: Simplify right side
    7,721.30x = 32,311,612.22
  5. Step 5: Solve for x
    x = 32,311,612.22/7,721.30
  6. Step 6: Final answer
    x = 4,184.74

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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.