Home / 7,142.22-10,720.35-3,862.35

Finding the Fourth Proportional to 7,142.22, 10,720.35 and 3,862.35

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Solution

The fourth proportional to 7,142.22, 10,720.35 and 3,862.35 is: 5,797.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.22 : 10,720.35 = 3,862.35 : x
  2. Step 2: Convert to fraction form
    7,142.22/10,720.35 = 3,862.35/x
  3. Step 3: Cross multiply
    7,142.22x = 10,720.35 × 3,862.35
  4. Step 4: Simplify right side
    7,142.22x = 41,405,743.82
  5. Step 5: Solve for x
    x = 41,405,743.82/7,142.22
  6. Step 6: Final answer
    x = 5,797.32

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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.