Home / 8,645.12-11,939.76-5,845.76

Finding the Fourth Proportional to 8,645.12, 11,939.76 and 5,845.76

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Solution

The fourth proportional to 8,645.12, 11,939.76 and 5,845.76 is: 8,073.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.12 : 11,939.76 = 5,845.76 : x
  2. Step 2: Convert to fraction form
    8,645.12/11,939.76 = 5,845.76/x
  3. Step 3: Cross multiply
    8,645.12x = 11,939.76 × 5,845.76
  4. Step 4: Simplify right side
    8,645.12x = 69,796,971.42
  5. Step 5: Solve for x
    x = 69,796,971.42/8,645.12
  6. Step 6: Final answer
    x = 8,073.57

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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.