Home / 6,291.30-9,438.36-2,131.08

Finding the Fourth Proportional to 6,291.30, 9,438.36 and 2,131.08

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Solution

The fourth proportional to 6,291.30, 9,438.36 and 2,131.08 is: 3,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.30 : 9,438.36 = 2,131.08 : x
  2. Step 2: Convert to fraction form
    6,291.30/9,438.36 = 2,131.08/x
  3. Step 3: Cross multiply
    6,291.30x = 9,438.36 × 2,131.08
  4. Step 4: Simplify right side
    6,291.30x = 20,113,900.23
  5. Step 5: Solve for x
    x = 20,113,900.23/6,291.30
  6. Step 6: Final answer
    x = 3,197.10

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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.