Home / 7,716.78-11,575.68-3,820.14

Finding the Fourth Proportional to 7,716.78, 11,575.68 and 3,820.14

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Solution

The fourth proportional to 7,716.78, 11,575.68 and 3,820.14 is: 5,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.78 : 11,575.68 = 3,820.14 : x
  2. Step 2: Convert to fraction form
    7,716.78/11,575.68 = 3,820.14/x
  3. Step 3: Cross multiply
    7,716.78x = 11,575.68 × 3,820.14
  4. Step 4: Simplify right side
    7,716.78x = 44,220,718.20
  5. Step 5: Solve for x
    x = 44,220,718.20/7,716.78
  6. Step 6: Final answer
    x = 5,730.46

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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.