Home / 11,771.46-17,657.16-3,985.74

Finding the Fourth Proportional to 11,771.46, 17,657.16 and 3,985.74

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Solution

The fourth proportional to 11,771.46, 17,657.16 and 3,985.74 is: 5,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,771.46 : 17,657.16 = 3,985.74 : x
  2. Step 2: Convert to fraction form
    11,771.46/17,657.16 = 3,985.74/x
  3. Step 3: Cross multiply
    11,771.46x = 17,657.16 × 3,985.74
  4. Step 4: Simplify right side
    11,771.46x = 70,376,848.90
  5. Step 5: Solve for x
    x = 70,376,848.90/11,771.46
  6. Step 6: Final answer
    x = 5,978.60

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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.