Home / 7,183.40-10,773.86-1,988.06

Finding the Fourth Proportional to 7,183.40, 10,773.86 and 1,988.06

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Solution

The fourth proportional to 7,183.40, 10,773.86 and 1,988.06 is: 2,981.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,183.40 : 10,773.86 = 1,988.06 : x
  2. Step 2: Convert to fraction form
    7,183.40/10,773.86 = 1,988.06/x
  3. Step 3: Cross multiply
    7,183.40x = 10,773.86 × 1,988.06
  4. Step 4: Simplify right side
    7,183.40x = 21,419,080.11
  5. Step 5: Solve for x
    x = 21,419,080.11/7,183.40
  6. Step 6: Final answer
    x = 2,981.75

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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.