Home / 8,690.97-13,036.38-3,142.22

Finding the Fourth Proportional to 8,690.97, 13,036.38 and 3,142.22

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Solution

The fourth proportional to 8,690.97, 13,036.38 and 3,142.22 is: 4,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.97 : 13,036.38 = 3,142.22 : x
  2. Step 2: Convert to fraction form
    8,690.97/13,036.38 = 3,142.22/x
  3. Step 3: Cross multiply
    8,690.97x = 13,036.38 × 3,142.22
  4. Step 4: Simplify right side
    8,690.97x = 40,963,173.96
  5. Step 5: Solve for x
    x = 40,963,173.96/8,690.97
  6. Step 6: Final answer
    x = 4,713.30

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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.