Home / 7,428.77-11,131.41-2,742.32

Finding the Fourth Proportional to 7,428.77, 11,131.41 and 2,742.32

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Solution

The fourth proportional to 7,428.77, 11,131.41 and 2,742.32 is: 4,109.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.77 : 11,131.41 = 2,742.32 : x
  2. Step 2: Convert to fraction form
    7,428.77/11,131.41 = 2,742.32/x
  3. Step 3: Cross multiply
    7,428.77x = 11,131.41 × 2,742.32
  4. Step 4: Simplify right side
    7,428.77x = 30,525,832.61
  5. Step 5: Solve for x
    x = 30,525,832.61/7,428.77
  6. Step 6: Final answer
    x = 4,109.14

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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.