Home / 1,548.73-2,137.14-919.23

Finding the Fourth Proportional to 1,548.73, 2,137.14 and 919.23

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Solution

The fourth proportional to 1,548.73, 2,137.14 and 919.23 is: 1,268.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.73 : 2,137.14 = 919.23 : x
  2. Step 2: Convert to fraction form
    1,548.73/2,137.14 = 919.23/x
  3. Step 3: Cross multiply
    1,548.73x = 2,137.14 × 919.23
  4. Step 4: Simplify right side
    1,548.73x = 1,964,523.20
  5. Step 5: Solve for x
    x = 1,964,523.20/1,548.73
  6. Step 6: Final answer
    x = 1,268.47

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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.