Home / 1,909.36-2,859.18-1,258.12

Finding the Fourth Proportional to 1,909.36, 2,859.18 and 1,258.12

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Solution

The fourth proportional to 1,909.36, 2,859.18 and 1,258.12 is: 1,883.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.36 : 2,859.18 = 1,258.12 : x
  2. Step 2: Convert to fraction form
    1,909.36/2,859.18 = 1,258.12/x
  3. Step 3: Cross multiply
    1,909.36x = 2,859.18 × 1,258.12
  4. Step 4: Simplify right side
    1,909.36x = 3,597,185.25
  5. Step 5: Solve for x
    x = 3,597,185.25/1,909.36
  6. Step 6: Final answer
    x = 1,883.97

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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.