Home / 7,186.88-10,778.70-1,993.16

Finding the Fourth Proportional to 7,186.88, 10,778.70 and 1,993.16

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Solution

The fourth proportional to 7,186.88, 10,778.70 and 1,993.16 is: 2,989.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186.88 : 10,778.70 = 1,993.16 : x
  2. Step 2: Convert to fraction form
    7,186.88/10,778.70 = 1,993.16/x
  3. Step 3: Cross multiply
    7,186.88x = 10,778.70 × 1,993.16
  4. Step 4: Simplify right side
    7,186.88x = 21,483,708.11
  5. Step 5: Solve for x
    x = 21,483,708.11/7,186.88
  6. Step 6: Final answer
    x = 2,989.29

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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.