Home / 7,420.51-11,130.91-2,738.11

Finding the Fourth Proportional to 7,420.51, 11,130.91 and 2,738.11

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Solution

The fourth proportional to 7,420.51, 11,130.91 and 2,738.11 is: 4,107.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.51 : 11,130.91 = 2,738.11 : x
  2. Step 2: Convert to fraction form
    7,420.51/11,130.91 = 2,738.11/x
  3. Step 3: Cross multiply
    7,420.51x = 11,130.91 × 2,738.11
  4. Step 4: Simplify right side
    7,420.51x = 30,477,655.98
  5. Step 5: Solve for x
    x = 30,477,655.98/7,420.51
  6. Step 6: Final answer
    x = 4,107.22

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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.