Home / 5,286.42-7,287.74-3,605.66

Finding the Fourth Proportional to 5,286.42, 7,287.74 and 3,605.66

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Solution

The fourth proportional to 5,286.42, 7,287.74 and 3,605.66 is: 4,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.42 : 7,287.74 = 3,605.66 : x
  2. Step 2: Convert to fraction form
    5,286.42/7,287.74 = 3,605.66/x
  3. Step 3: Cross multiply
    5,286.42x = 7,287.74 × 3,605.66
  4. Step 4: Simplify right side
    5,286.42x = 26,277,112.61
  5. Step 5: Solve for x
    x = 26,277,112.61/5,286.42
  6. Step 6: Final answer
    x = 4,970.68

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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.