Home / 11,931.75-17,897.86-3,611.74

Finding the Fourth Proportional to 11,931.75, 17,897.86 and 3,611.74

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Solution

The fourth proportional to 11,931.75, 17,897.86 and 3,611.74 is: 5,417.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.75 : 17,897.86 = 3,611.74 : x
  2. Step 2: Convert to fraction form
    11,931.75/17,897.86 = 3,611.74/x
  3. Step 3: Cross multiply
    11,931.75x = 17,897.86 × 3,611.74
  4. Step 4: Simplify right side
    11,931.75x = 64,642,416.88
  5. Step 5: Solve for x
    x = 64,642,416.88/11,931.75
  6. Step 6: Final answer
    x = 5,417.68

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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.