Home / 2,570.14-3,546.80-1,391.20

Finding the Fourth Proportional to 2,570.14, 3,546.80 and 1,391.20

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Solution

The fourth proportional to 2,570.14, 3,546.80 and 1,391.20 is: 1,919.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,570.14 : 3,546.80 = 1,391.20 : x
  2. Step 2: Convert to fraction form
    2,570.14/3,546.80 = 1,391.20/x
  3. Step 3: Cross multiply
    2,570.14x = 3,546.80 × 1,391.20
  4. Step 4: Simplify right side
    2,570.14x = 4,934,308.16
  5. Step 5: Solve for x
    x = 4,934,308.16/2,570.14
  6. Step 6: Final answer
    x = 1,919.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.