Home / 7,970.88-11,956.34-2,776.78

Finding the Fourth Proportional to 7,970.88, 11,956.34 and 2,776.78

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Solution

The fourth proportional to 7,970.88, 11,956.34 and 2,776.78 is: 4,165.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,970.88 : 11,956.34 = 2,776.78 : x
  2. Step 2: Convert to fraction form
    7,970.88/11,956.34 = 2,776.78/x
  3. Step 3: Cross multiply
    7,970.88x = 11,956.34 × 2,776.78
  4. Step 4: Simplify right side
    7,970.88x = 33,200,125.79
  5. Step 5: Solve for x
    x = 33,200,125.79/7,970.88
  6. Step 6: Final answer
    x = 4,165.18

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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.