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Finding the Fourth Proportional to 3,518.16, 4,865.54 and 3,144.55

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Solution

The fourth proportional to 3,518.16, 4,865.54 and 3,144.55 is: 4,348.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.16 : 4,865.54 = 3,144.55 : x
  2. Step 2: Convert to fraction form
    3,518.16/4,865.54 = 3,144.55/x
  3. Step 3: Cross multiply
    3,518.16x = 4,865.54 × 3,144.55
  4. Step 4: Simplify right side
    3,518.16x = 15,299,933.81
  5. Step 5: Solve for x
    x = 15,299,933.81/3,518.16
  6. Step 6: Final answer
    x = 4,348.85

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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.