Home / 5,238.26-7,857.36-2,118.22

Finding the Fourth Proportional to 5,238.26, 7,857.36 and 2,118.22

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Solution

The fourth proportional to 5,238.26, 7,857.36 and 2,118.22 is: 3,177.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.26 : 7,857.36 = 2,118.22 : x
  2. Step 2: Convert to fraction form
    5,238.26/7,857.36 = 2,118.22/x
  3. Step 3: Cross multiply
    5,238.26x = 7,857.36 × 2,118.22
  4. Step 4: Simplify right side
    5,238.26x = 16,643,597.46
  5. Step 5: Solve for x
    x = 16,643,597.46/5,238.26
  6. Step 6: Final answer
    x = 3,177.32

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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.