Home / 5,419.89-8,130.93-3,081.02

Finding the Fourth Proportional to 5,419.89, 8,130.93 and 3,081.02

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Solution

The fourth proportional to 5,419.89, 8,130.93 and 3,081.02 is: 4,622.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.89 : 8,130.93 = 3,081.02 : x
  2. Step 2: Convert to fraction form
    5,419.89/8,130.93 = 3,081.02/x
  3. Step 3: Cross multiply
    5,419.89x = 8,130.93 × 3,081.02
  4. Step 4: Simplify right side
    5,419.89x = 25,051,528.85
  5. Step 5: Solve for x
    x = 25,051,528.85/5,419.89
  6. Step 6: Final answer
    x = 4,622.15

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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.