Home / 7,821.74-11,733.13-3,141.14

Finding the Fourth Proportional to 7,821.74, 11,733.13 and 3,141.14

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Solution

The fourth proportional to 7,821.74, 11,733.13 and 3,141.14 is: 4,711.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.74 : 11,733.13 = 3,141.14 : x
  2. Step 2: Convert to fraction form
    7,821.74/11,733.13 = 3,141.14/x
  3. Step 3: Cross multiply
    7,821.74x = 11,733.13 × 3,141.14
  4. Step 4: Simplify right side
    7,821.74x = 36,855,388.26
  5. Step 5: Solve for x
    x = 36,855,388.26/7,821.74
  6. Step 6: Final answer
    x = 4,711.92

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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.