Home / 8,109.21-11,190.74-4,572.42

Finding the Fourth Proportional to 8,109.21, 11,190.74 and 4,572.42

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Solution

The fourth proportional to 8,109.21, 11,190.74 and 4,572.42 is: 6,309.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.21 : 11,190.74 = 4,572.42 : x
  2. Step 2: Convert to fraction form
    8,109.21/11,190.74 = 4,572.42/x
  3. Step 3: Cross multiply
    8,109.21x = 11,190.74 × 4,572.42
  4. Step 4: Simplify right side
    8,109.21x = 51,168,740.53
  5. Step 5: Solve for x
    x = 51,168,740.53/8,109.21
  6. Step 6: Final answer
    x = 6,309.95

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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.