Home / 7,986.35-11,980.95-2,721.07

Finding the Fourth Proportional to 7,986.35, 11,980.95 and 2,721.07

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Solution

The fourth proportional to 7,986.35, 11,980.95 and 2,721.07 is: 4,082.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.35 : 11,980.95 = 2,721.07 : x
  2. Step 2: Convert to fraction form
    7,986.35/11,980.95 = 2,721.07/x
  3. Step 3: Cross multiply
    7,986.35x = 11,980.95 × 2,721.07
  4. Step 4: Simplify right side
    7,986.35x = 32,600,941.00
  5. Step 5: Solve for x
    x = 32,600,941.00/7,986.35
  6. Step 6: Final answer
    x = 4,082.08

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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.