Home / 5,120.77-7,065.91-2,996.48

Finding the Fourth Proportional to 5,120.77, 7,065.91 and 2,996.48

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Solution

The fourth proportional to 5,120.77, 7,065.91 and 2,996.48 is: 4,134.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.77 : 7,065.91 = 2,996.48 : x
  2. Step 2: Convert to fraction form
    5,120.77/7,065.91 = 2,996.48/x
  3. Step 3: Cross multiply
    5,120.77x = 7,065.91 × 2,996.48
  4. Step 4: Simplify right side
    5,120.77x = 21,172,858.00
  5. Step 5: Solve for x
    x = 21,172,858.00/5,120.77
  6. Step 6: Final answer
    x = 4,134.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.