Home / 7,977.16-11,965.26-2,978.56

Finding the Fourth Proportional to 7,977.16, 11,965.26 and 2,978.56

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Solution

The fourth proportional to 7,977.16, 11,965.26 and 2,978.56 is: 4,467.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.16 : 11,965.26 = 2,978.56 : x
  2. Step 2: Convert to fraction form
    7,977.16/11,965.26 = 2,978.56/x
  3. Step 3: Cross multiply
    7,977.16x = 11,965.26 × 2,978.56
  4. Step 4: Simplify right side
    7,977.16x = 35,639,244.83
  5. Step 5: Solve for x
    x = 35,639,244.83/7,977.16
  6. Step 6: Final answer
    x = 4,467.66

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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.