Home / 2,586.62-3,880.80-1,126.73

Finding the Fourth Proportional to 2,586.62, 3,880.80 and 1,126.73

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Solution

The fourth proportional to 2,586.62, 3,880.80 and 1,126.73 is: 1,690.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.62 : 3,880.80 = 1,126.73 : x
  2. Step 2: Convert to fraction form
    2,586.62/3,880.80 = 1,126.73/x
  3. Step 3: Cross multiply
    2,586.62x = 3,880.80 × 1,126.73
  4. Step 4: Simplify right side
    2,586.62x = 4,372,613.78
  5. Step 5: Solve for x
    x = 4,372,613.78/2,586.62
  6. Step 6: Final answer
    x = 1,690.47

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1.5x scale

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.