Home / 1,319.28-1,987.73-1,194.36

Finding the Fourth Proportional to 1,319.28, 1,987.73 and 1,194.36

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Solution

The fourth proportional to 1,319.28, 1,987.73 and 1,194.36 is: 1,799.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.28 : 1,987.73 = 1,194.36 : x
  2. Step 2: Convert to fraction form
    1,319.28/1,987.73 = 1,194.36/x
  3. Step 3: Cross multiply
    1,319.28x = 1,987.73 × 1,194.36
  4. Step 4: Simplify right side
    1,319.28x = 2,374,059.23
  5. Step 5: Solve for x
    x = 2,374,059.23/1,319.28
  6. Step 6: Final answer
    x = 1,799.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.