Home / 7,980.25-11,971.59-2,784.91

Finding the Fourth Proportional to 7,980.25, 11,971.59 and 2,784.91

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Solution

The fourth proportional to 7,980.25, 11,971.59 and 2,784.91 is: 4,177.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.25 : 11,971.59 = 2,784.91 : x
  2. Step 2: Convert to fraction form
    7,980.25/11,971.59 = 2,784.91/x
  3. Step 3: Cross multiply
    7,980.25x = 11,971.59 × 2,784.91
  4. Step 4: Simplify right side
    7,980.25x = 33,339,800.71
  5. Step 5: Solve for x
    x = 33,339,800.71/7,980.25
  6. Step 6: Final answer
    x = 4,177.79

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1.5x scale

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.