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Finding the Fourth Proportional to 8,438.66, 11,645.66 and 4,901.69

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Solution

The fourth proportional to 8,438.66, 11,645.66 and 4,901.69 is: 6,764.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.66 : 11,645.66 = 4,901.69 : x
  2. Step 2: Convert to fraction form
    8,438.66/11,645.66 = 4,901.69/x
  3. Step 3: Cross multiply
    8,438.66x = 11,645.66 × 4,901.69
  4. Step 4: Simplify right side
    8,438.66x = 57,083,390.66
  5. Step 5: Solve for x
    x = 57,083,390.66/8,438.66
  6. Step 6: Final answer
    x = 6,764.51

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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.