Home / 7,980.98-11,973.02-2,715.78

Finding the Fourth Proportional to 7,980.98, 11,973.02 and 2,715.78

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Solution

The fourth proportional to 7,980.98, 11,973.02 and 2,715.78 is: 4,074.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.98 : 11,973.02 = 2,715.78 : x
  2. Step 2: Convert to fraction form
    7,980.98/11,973.02 = 2,715.78/x
  3. Step 3: Cross multiply
    7,980.98x = 11,973.02 × 2,715.78
  4. Step 4: Simplify right side
    7,980.98x = 32,516,074.68
  5. Step 5: Solve for x
    x = 32,516,074.68/7,980.98
  6. Step 6: Final answer
    x = 4,074.19

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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.