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Finding the Fourth Proportional to 3,618.79, 5,397.66 and 3,300.46

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Solution

The fourth proportional to 3,618.79, 5,397.66 and 3,300.46 is: 4,922.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.79 : 5,397.66 = 3,300.46 : x
  2. Step 2: Convert to fraction form
    3,618.79/5,397.66 = 3,300.46/x
  3. Step 3: Cross multiply
    3,618.79x = 5,397.66 × 3,300.46
  4. Step 4: Simplify right side
    3,618.79x = 17,814,747.43
  5. Step 5: Solve for x
    x = 17,814,747.43/3,618.79
  6. Step 6: Final answer
    x = 4,922.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.