Home / 8,911.14-12,297.57-5,772.78

Finding the Fourth Proportional to 8,911.14, 12,297.57 and 5,772.78

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Solution

The fourth proportional to 8,911.14, 12,297.57 and 5,772.78 is: 7,966.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.14 : 12,297.57 = 5,772.78 : x
  2. Step 2: Convert to fraction form
    8,911.14/12,297.57 = 5,772.78/x
  3. Step 3: Cross multiply
    8,911.14x = 12,297.57 × 5,772.78
  4. Step 4: Simplify right side
    8,911.14x = 70,991,166.14
  5. Step 5: Solve for x
    x = 70,991,166.14/8,911.14
  6. Step 6: Final answer
    x = 7,966.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.