Home / 7,910.21-11,868.15-3,697.21

Finding the Fourth Proportional to 7,910.21, 11,868.15 and 3,697.21

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Solution

The fourth proportional to 7,910.21, 11,868.15 and 3,697.21 is: 5,547.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.21 : 11,868.15 = 3,697.21 : x
  2. Step 2: Convert to fraction form
    7,910.21/11,868.15 = 3,697.21/x
  3. Step 3: Cross multiply
    7,910.21x = 11,868.15 × 3,697.21
  4. Step 4: Simplify right side
    7,910.21x = 43,879,071.56
  5. Step 5: Solve for x
    x = 43,879,071.56/7,910.21
  6. Step 6: Final answer
    x = 5,547.15

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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.