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Finding the Fourth Proportional to 4,073.40, 5,621.40 and 2,280.82

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Solution

The fourth proportional to 4,073.40, 5,621.40 and 2,280.82 is: 3,147.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,073.40 : 5,621.40 = 2,280.82 : x
  2. Step 2: Convert to fraction form
    4,073.40/5,621.40 = 2,280.82/x
  3. Step 3: Cross multiply
    4,073.40x = 5,621.40 × 2,280.82
  4. Step 4: Simplify right side
    4,073.40x = 12,821,401.55
  5. Step 5: Solve for x
    x = 12,821,401.55/4,073.40
  6. Step 6: Final answer
    x = 3,147.59

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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.