Home / 2,690.26-3,712.65-1,571.02

Finding the Fourth Proportional to 2,690.26, 3,712.65 and 1,571.02

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Solution

The fourth proportional to 2,690.26, 3,712.65 and 1,571.02 is: 2,168.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.26 : 3,712.65 = 1,571.02 : x
  2. Step 2: Convert to fraction form
    2,690.26/3,712.65 = 1,571.02/x
  3. Step 3: Cross multiply
    2,690.26x = 3,712.65 × 1,571.02
  4. Step 4: Simplify right side
    2,690.26x = 5,832,647.40
  5. Step 5: Solve for x
    x = 5,832,647.40/2,690.26
  6. Step 6: Final answer
    x = 2,168.06

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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.