Home / 7,420.89-11,130.15-2,743.11

Finding the Fourth Proportional to 7,420.89, 11,130.15 and 2,743.11

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Solution

The fourth proportional to 7,420.89, 11,130.15 and 2,743.11 is: 4,114.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.89 : 11,130.15 = 2,743.11 : x
  2. Step 2: Convert to fraction form
    7,420.89/11,130.15 = 2,743.11/x
  3. Step 3: Cross multiply
    7,420.89x = 11,130.15 × 2,743.11
  4. Step 4: Simplify right side
    7,420.89x = 30,531,225.77
  5. Step 5: Solve for x
    x = 30,531,225.77/7,420.89
  6. Step 6: Final answer
    x = 4,114.23

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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.