Home / 7,971.88-11,001.18-4,435.12

Finding the Fourth Proportional to 7,971.88, 11,001.18 and 4,435.12

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Solution

The fourth proportional to 7,971.88, 11,001.18 and 4,435.12 is: 6,120.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971.88 : 11,001.18 = 4,435.12 : x
  2. Step 2: Convert to fraction form
    7,971.88/11,001.18 = 4,435.12/x
  3. Step 3: Cross multiply
    7,971.88x = 11,001.18 × 4,435.12
  4. Step 4: Simplify right side
    7,971.88x = 48,791,553.44
  5. Step 5: Solve for x
    x = 48,791,553.44/7,971.88
  6. Step 6: Final answer
    x = 6,120.46

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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.