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Finding the Fourth Proportional to 3,886.70, 5,366.99 and 3,332.66

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Solution

The fourth proportional to 3,886.70, 5,366.99 and 3,332.66 is: 4,601.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.70 : 5,366.99 = 3,332.66 : x
  2. Step 2: Convert to fraction form
    3,886.70/5,366.99 = 3,332.66/x
  3. Step 3: Cross multiply
    3,886.70x = 5,366.99 × 3,332.66
  4. Step 4: Simplify right side
    3,886.70x = 17,886,334.39
  5. Step 5: Solve for x
    x = 17,886,334.39/3,886.70
  6. Step 6: Final answer
    x = 4,601.94

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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.