Home / 7,772.16-11,651.36-5,311.68

Finding the Fourth Proportional to 7,772.16, 11,651.36 and 5,311.68

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Solution

The fourth proportional to 7,772.16, 11,651.36 and 5,311.68 is: 7,962.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.16 : 11,651.36 = 5,311.68 : x
  2. Step 2: Convert to fraction form
    7,772.16/11,651.36 = 5,311.68/x
  3. Step 3: Cross multiply
    7,772.16x = 11,651.36 × 5,311.68
  4. Step 4: Simplify right side
    7,772.16x = 61,888,295.88
  5. Step 5: Solve for x
    x = 61,888,295.88/7,772.16
  6. Step 6: Final answer
    x = 7,962.82

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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.