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Finding the Fourth Proportional to 5,661.50, 7,811.24 and 3,423.41

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Solution

The fourth proportional to 5,661.50, 7,811.24 and 3,423.41 is: 4,723.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.50 : 7,811.24 = 3,423.41 : x
  2. Step 2: Convert to fraction form
    5,661.50/7,811.24 = 3,423.41/x
  3. Step 3: Cross multiply
    5,661.50x = 7,811.24 × 3,423.41
  4. Step 4: Simplify right side
    5,661.50x = 26,741,094.19
  5. Step 5: Solve for x
    x = 26,741,094.19/5,661.50
  6. Step 6: Final answer
    x = 4,723.33

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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.