Home / 6,291.31-9,438.15-2,074.80

Finding the Fourth Proportional to 6,291.31, 9,438.15 and 2,074.80

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Solution

The fourth proportional to 6,291.31, 9,438.15 and 2,074.80 is: 3,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.31 : 9,438.15 = 2,074.80 : x
  2. Step 2: Convert to fraction form
    6,291.31/9,438.15 = 2,074.80/x
  3. Step 3: Cross multiply
    6,291.31x = 9,438.15 × 2,074.80
  4. Step 4: Simplify right side
    6,291.31x = 19,582,316.79
  5. Step 5: Solve for x
    x = 19,582,316.79/6,291.31
  6. Step 6: Final answer
    x = 3,112.60

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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.