Home / 8,155.09-11,251.32-5,636.30

Finding the Fourth Proportional to 8,155.09, 11,251.32 and 5,636.30

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Solution

The fourth proportional to 8,155.09, 11,251.32 and 5,636.30 is: 7,776.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.09 : 11,251.32 = 5,636.30 : x
  2. Step 2: Convert to fraction form
    8,155.09/11,251.32 = 5,636.30/x
  3. Step 3: Cross multiply
    8,155.09x = 11,251.32 × 5,636.30
  4. Step 4: Simplify right side
    8,155.09x = 63,415,737.52
  5. Step 5: Solve for x
    x = 63,415,737.52/8,155.09
  6. Step 6: Final answer
    x = 7,776.21

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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.