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Finding the Fourth Proportional to 5,621.45, 8,423.24 and 3,765.74

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Solution

The fourth proportional to 5,621.45, 8,423.24 and 3,765.74 is: 5,642.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.45 : 8,423.24 = 3,765.74 : x
  2. Step 2: Convert to fraction form
    5,621.45/8,423.24 = 3,765.74/x
  3. Step 3: Cross multiply
    5,621.45x = 8,423.24 × 3,765.74
  4. Step 4: Simplify right side
    5,621.45x = 31,719,670.85
  5. Step 5: Solve for x
    x = 31,719,670.85/5,621.45
  6. Step 6: Final answer
    x = 5,642.62

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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.