Home / 3,561.20-5,340.66-1,188.77

Finding the Fourth Proportional to 3,561.20, 5,340.66 and 1,188.77

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Solution

The fourth proportional to 3,561.20, 5,340.66 and 1,188.77 is: 1,782.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.20 : 5,340.66 = 1,188.77 : x
  2. Step 2: Convert to fraction form
    3,561.20/5,340.66 = 1,188.77/x
  3. Step 3: Cross multiply
    3,561.20x = 5,340.66 × 1,188.77
  4. Step 4: Simplify right side
    3,561.20x = 6,348,816.39
  5. Step 5: Solve for x
    x = 6,348,816.39/3,561.20
  6. Step 6: Final answer
    x = 1,782.77

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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.