Home / 3,730.90-5,591.31-1,421.14

Finding the Fourth Proportional to 3,730.90, 5,591.31 and 1,421.14

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Solution

The fourth proportional to 3,730.90, 5,591.31 and 1,421.14 is: 2,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,730.90 : 5,591.31 = 1,421.14 : x
  2. Step 2: Convert to fraction form
    3,730.90/5,591.31 = 1,421.14/x
  3. Step 3: Cross multiply
    3,730.90x = 5,591.31 × 1,421.14
  4. Step 4: Simplify right side
    3,730.90x = 7,946,034.29
  5. Step 5: Solve for x
    x = 7,946,034.29/3,730.90
  6. Step 6: Final answer
    x = 2,129.79

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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.