Home / 5,170.36-7,755.40-1,274.80

Finding the Fourth Proportional to 5,170.36, 7,755.40 and 1,274.80

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Solution

The fourth proportional to 5,170.36, 7,755.40 and 1,274.80 is: 1,912.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.36 : 7,755.40 = 1,274.80 : x
  2. Step 2: Convert to fraction form
    5,170.36/7,755.40 = 1,274.80/x
  3. Step 3: Cross multiply
    5,170.36x = 7,755.40 × 1,274.80
  4. Step 4: Simplify right side
    5,170.36x = 9,886,583.92
  5. Step 5: Solve for x
    x = 9,886,583.92/5,170.36
  6. Step 6: Final answer
    x = 1,912.17

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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.