Home / 1,731.44-2,388.48-1,208.72

Finding the Fourth Proportional to 1,731.44, 2,388.48 and 1,208.72

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Solution

The fourth proportional to 1,731.44, 2,388.48 and 1,208.72 is: 1,667.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.44 : 2,388.48 = 1,208.72 : x
  2. Step 2: Convert to fraction form
    1,731.44/2,388.48 = 1,208.72/x
  3. Step 3: Cross multiply
    1,731.44x = 2,388.48 × 1,208.72
  4. Step 4: Simplify right side
    1,731.44x = 2,887,003.55
  5. Step 5: Solve for x
    x = 2,887,003.55/1,731.44
  6. Step 6: Final answer
    x = 1,667.40

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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.