Home / 3,430.97-5,146.45-1,239.70

Finding the Fourth Proportional to 3,430.97, 5,146.45 and 1,239.70

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Solution

The fourth proportional to 3,430.97, 5,146.45 and 1,239.70 is: 1,859.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.97 : 5,146.45 = 1,239.70 : x
  2. Step 2: Convert to fraction form
    3,430.97/5,146.45 = 1,239.70/x
  3. Step 3: Cross multiply
    3,430.97x = 5,146.45 × 1,239.70
  4. Step 4: Simplify right side
    3,430.97x = 6,380,054.07
  5. Step 5: Solve for x
    x = 6,380,054.07/3,430.97
  6. Step 6: Final answer
    x = 1,859.55

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Similar ratio
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1.5x scale

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.