Home / 7,911.28-11,870.34-3,748.96

Finding the Fourth Proportional to 7,911.28, 11,870.34 and 3,748.96

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Solution

The fourth proportional to 7,911.28, 11,870.34 and 3,748.96 is: 5,625.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.28 : 11,870.34 = 3,748.96 : x
  2. Step 2: Convert to fraction form
    7,911.28/11,870.34 = 3,748.96/x
  3. Step 3: Cross multiply
    7,911.28x = 11,870.34 × 3,748.96
  4. Step 4: Simplify right side
    7,911.28x = 44,501,429.85
  5. Step 5: Solve for x
    x = 44,501,429.85/7,911.28
  6. Step 6: Final answer
    x = 5,625.06

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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.