Home / 7,188.36-10,781.34-1,993.02

Finding the Fourth Proportional to 7,188.36, 10,781.34 and 1,993.02

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Solution

The fourth proportional to 7,188.36, 10,781.34 and 1,993.02 is: 2,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.36 : 10,781.34 = 1,993.02 : x
  2. Step 2: Convert to fraction form
    7,188.36/10,781.34 = 1,993.02/x
  3. Step 3: Cross multiply
    7,188.36x = 10,781.34 × 1,993.02
  4. Step 4: Simplify right side
    7,188.36x = 21,487,426.25
  5. Step 5: Solve for x
    x = 21,487,426.25/7,188.36
  6. Step 6: Final answer
    x = 2,989.20

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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.