Home / 1,548.42-2,321.19-1,139.64

Finding the Fourth Proportional to 1,548.42, 2,321.19 and 1,139.64

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Solution

The fourth proportional to 1,548.42, 2,321.19 and 1,139.64 is: 1,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.42 : 2,321.19 = 1,139.64 : x
  2. Step 2: Convert to fraction form
    1,548.42/2,321.19 = 1,139.64/x
  3. Step 3: Cross multiply
    1,548.42x = 2,321.19 × 1,139.64
  4. Step 4: Simplify right side
    1,548.42x = 2,645,320.97
  5. Step 5: Solve for x
    x = 2,645,320.97/1,548.42
  6. Step 6: Final answer
    x = 1,708.40

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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.