Home / 8,109.50-11,192.74-4,572.78

Finding the Fourth Proportional to 8,109.50, 11,192.74 and 4,572.78

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Solution

The fourth proportional to 8,109.50, 11,192.74 and 4,572.78 is: 6,311.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.50 : 11,192.74 = 4,572.78 : x
  2. Step 2: Convert to fraction form
    8,109.50/11,192.74 = 4,572.78/x
  3. Step 3: Cross multiply
    8,109.50x = 11,192.74 × 4,572.78
  4. Step 4: Simplify right side
    8,109.50x = 51,181,937.62
  5. Step 5: Solve for x
    x = 51,181,937.62/8,109.50
  6. Step 6: Final answer
    x = 6,311.36

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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.