Home / 1,909.30-2,859.08-1,258.06

Finding the Fourth Proportional to 1,909.30, 2,859.08 and 1,258.06

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Solution

The fourth proportional to 1,909.30, 2,859.08 and 1,258.06 is: 1,883.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.30 : 2,859.08 = 1,258.06 : x
  2. Step 2: Convert to fraction form
    1,909.30/2,859.08 = 1,258.06/x
  3. Step 3: Cross multiply
    1,909.30x = 2,859.08 × 1,258.06
  4. Step 4: Simplify right side
    1,909.30x = 3,596,879.89
  5. Step 5: Solve for x
    x = 3,596,879.89/1,909.30
  6. Step 6: Final answer
    x = 1,883.88

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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.