Home / 7,721.06-11,582.82-2,790.20

Finding the Fourth Proportional to 7,721.06, 11,582.82 and 2,790.20

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Solution

The fourth proportional to 7,721.06, 11,582.82 and 2,790.20 is: 4,185.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.06 : 11,582.82 = 2,790.20 : x
  2. Step 2: Convert to fraction form
    7,721.06/11,582.82 = 2,790.20/x
  3. Step 3: Cross multiply
    7,721.06x = 11,582.82 × 2,790.20
  4. Step 4: Simplify right side
    7,721.06x = 32,318,384.36
  5. Step 5: Solve for x
    x = 32,318,384.36/7,721.06
  6. Step 6: Final answer
    x = 4,185.74

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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.