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Finding the Fourth Proportional to 5,672.70, 8,503.65 and 4,422.60

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Solution

The fourth proportional to 5,672.70, 8,503.65 and 4,422.60 is: 6,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.70 : 8,503.65 = 4,422.60 : x
  2. Step 2: Convert to fraction form
    5,672.70/8,503.65 = 4,422.60/x
  3. Step 3: Cross multiply
    5,672.70x = 8,503.65 × 4,422.60
  4. Step 4: Simplify right side
    5,672.70x = 37,608,242.49
  5. Step 5: Solve for x
    x = 37,608,242.49/5,672.70
  6. Step 6: Final answer
    x = 6,629.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.