Home / 3,147.42-4,344.93-1,970.22

Finding the Fourth Proportional to 3,147.42, 4,344.93 and 1,970.22

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Solution

The fourth proportional to 3,147.42, 4,344.93 and 1,970.22 is: 2,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.42 : 4,344.93 = 1,970.22 : x
  2. Step 2: Convert to fraction form
    3,147.42/4,344.93 = 1,970.22/x
  3. Step 3: Cross multiply
    3,147.42x = 4,344.93 × 1,970.22
  4. Step 4: Simplify right side
    3,147.42x = 8,560,467.98
  5. Step 5: Solve for x
    x = 8,560,467.98/3,147.42
  6. Step 6: Final answer
    x = 2,719.84

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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.