Home / 3,147.90-4,344.21-1,803.74

Finding the Fourth Proportional to 3,147.90, 4,344.21 and 1,803.74

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Solution

The fourth proportional to 3,147.90, 4,344.21 and 1,803.74 is: 2,489.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.90 : 4,344.21 = 1,803.74 : x
  2. Step 2: Convert to fraction form
    3,147.90/4,344.21 = 1,803.74/x
  3. Step 3: Cross multiply
    3,147.90x = 4,344.21 × 1,803.74
  4. Step 4: Simplify right side
    3,147.90x = 7,835,825.35
  5. Step 5: Solve for x
    x = 7,835,825.35/3,147.90
  6. Step 6: Final answer
    x = 2,489.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.