Home / 2,127.11-3,190.64-740.44

Finding the Fourth Proportional to 2,127.11, 3,190.64 and 740.44

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Solution

The fourth proportional to 2,127.11, 3,190.64 and 740.44 is: 1,110.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.11 : 3,190.64 = 740.44 : x
  2. Step 2: Convert to fraction form
    2,127.11/3,190.64 = 740.44/x
  3. Step 3: Cross multiply
    2,127.11x = 3,190.64 × 740.44
  4. Step 4: Simplify right side
    2,127.11x = 2,362,477.48
  5. Step 5: Solve for x
    x = 2,362,477.48/2,127.11
  6. Step 6: Final answer
    x = 1,110.65

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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.