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Finding the Fourth Proportional to 3,681.07, 5,521.59 and 1,489.78

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Solution

The fourth proportional to 3,681.07, 5,521.59 and 1,489.78 is: 2,234.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.07 : 5,521.59 = 1,489.78 : x
  2. Step 2: Convert to fraction form
    3,681.07/5,521.59 = 1,489.78/x
  3. Step 3: Cross multiply
    3,681.07x = 5,521.59 × 1,489.78
  4. Step 4: Simplify right side
    3,681.07x = 8,225,954.35
  5. Step 5: Solve for x
    x = 8,225,954.35/3,681.07
  6. Step 6: Final answer
    x = 2,234.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.