Home / 7,419.54-11,129.66-4,130.15

Finding the Fourth Proportional to 7,419.54, 11,129.66 and 4,130.15

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Solution

The fourth proportional to 7,419.54, 11,129.66 and 4,130.15 is: 6,195.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.54 : 11,129.66 = 4,130.15 : x
  2. Step 2: Convert to fraction form
    7,419.54/11,129.66 = 4,130.15/x
  3. Step 3: Cross multiply
    7,419.54x = 11,129.66 × 4,130.15
  4. Step 4: Simplify right side
    7,419.54x = 45,967,172.42
  5. Step 5: Solve for x
    x = 45,967,172.42/7,419.54
  6. Step 6: Final answer
    x = 6,195.42

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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.