Home / 2,232.39-3,080.65-1,288.18

Finding the Fourth Proportional to 2,232.39, 3,080.65 and 1,288.18

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Solution

The fourth proportional to 2,232.39, 3,080.65 and 1,288.18 is: 1,777.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,232.39 : 3,080.65 = 1,288.18 : x
  2. Step 2: Convert to fraction form
    2,232.39/3,080.65 = 1,288.18/x
  3. Step 3: Cross multiply
    2,232.39x = 3,080.65 × 1,288.18
  4. Step 4: Simplify right side
    2,232.39x = 3,968,431.72
  5. Step 5: Solve for x
    x = 3,968,431.72/2,232.39
  6. Step 6: Final answer
    x = 1,777.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.