Home / 8,622.33-11,895.69-5,639.86

Finding the Fourth Proportional to 8,622.33, 11,895.69 and 5,639.86

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Solution

The fourth proportional to 8,622.33, 11,895.69 and 5,639.86 is: 7,780.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.33 : 11,895.69 = 5,639.86 : x
  2. Step 2: Convert to fraction form
    8,622.33/11,895.69 = 5,639.86/x
  3. Step 3: Cross multiply
    8,622.33x = 11,895.69 × 5,639.86
  4. Step 4: Simplify right side
    8,622.33x = 67,090,026.20
  5. Step 5: Solve for x
    x = 67,090,026.20/8,622.33
  6. Step 6: Final answer
    x = 7,780.96

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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.