Home / 2,297.62-3,170.90-1,289.42

Finding the Fourth Proportional to 2,297.62, 3,170.90 and 1,289.42

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Solution

The fourth proportional to 2,297.62, 3,170.90 and 1,289.42 is: 1,779.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,297.62 : 3,170.90 = 1,289.42 : x
  2. Step 2: Convert to fraction form
    2,297.62/3,170.90 = 1,289.42/x
  3. Step 3: Cross multiply
    2,297.62x = 3,170.90 × 1,289.42
  4. Step 4: Simplify right side
    2,297.62x = 4,088,613.88
  5. Step 5: Solve for x
    x = 4,088,613.88/2,297.62
  6. Step 6: Final answer
    x = 1,779.50

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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.