Home / 7,127.36-10,686-2,741.12

Finding the Fourth Proportional to 7,127.36, 10,686 and 2,741.12

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Solution

The fourth proportional to 7,127.36, 10,686 and 2,741.12 is: 4,109.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.36 : 10,686 = 2,741.12 : x
  2. Step 2: Convert to fraction form
    7,127.36/10,686 = 2,741.12/x
  3. Step 3: Cross multiply
    7,127.36x = 10,686 × 2,741.12
  4. Step 4: Simplify right side
    7,127.36x = 29,291,608.32
  5. Step 5: Solve for x
    x = 29,291,608.32/7,127.36
  6. Step 6: Final answer
    x = 4,109.74

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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.