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Finding the Fourth Proportional to 9,811.81, 13,540.42 and 5,335.67

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Solution

The fourth proportional to 9,811.81, 13,540.42 and 5,335.67 is: 7,363.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,811.81 : 13,540.42 = 5,335.67 : x
  2. Step 2: Convert to fraction form
    9,811.81/13,540.42 = 5,335.67/x
  3. Step 3: Cross multiply
    9,811.81x = 13,540.42 × 5,335.67
  4. Step 4: Simplify right side
    9,811.81x = 72,247,223.29
  5. Step 5: Solve for x
    x = 72,247,223.29/9,811.81
  6. Step 6: Final answer
    x = 7,363.29

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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.