Home / 4,090.31-6,138.52-1,591.89

Finding the Fourth Proportional to 4,090.31, 6,138.52 and 1,591.89

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Solution

The fourth proportional to 4,090.31, 6,138.52 and 1,591.89 is: 2,389.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.31 : 6,138.52 = 1,591.89 : x
  2. Step 2: Convert to fraction form
    4,090.31/6,138.52 = 1,591.89/x
  3. Step 3: Cross multiply
    4,090.31x = 6,138.52 × 1,591.89
  4. Step 4: Simplify right side
    4,090.31x = 9,771,821.60
  5. Step 5: Solve for x
    x = 9,771,821.60/4,090.31
  6. Step 6: Final answer
    x = 2,389.02

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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.