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Finding the Fourth Proportional to 8,472.94, 11,691.81 and 4,888.22

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Solution

The fourth proportional to 8,472.94, 11,691.81 and 4,888.22 is: 6,745.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.94 : 11,691.81 = 4,888.22 : x
  2. Step 2: Convert to fraction form
    8,472.94/11,691.81 = 4,888.22/x
  3. Step 3: Cross multiply
    8,472.94x = 11,691.81 × 4,888.22
  4. Step 4: Simplify right side
    8,472.94x = 57,152,168.71
  5. Step 5: Solve for x
    x = 57,152,168.71/8,472.94
  6. Step 6: Final answer
    x = 6,745.26

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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.