Home / 2,601.42-3,899.97-1,778.55

Finding the Fourth Proportional to 2,601.42, 3,899.97 and 1,778.55

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Solution

The fourth proportional to 2,601.42, 3,899.97 and 1,778.55 is: 2,666.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,601.42 : 3,899.97 = 1,778.55 : x
  2. Step 2: Convert to fraction form
    2,601.42/3,899.97 = 1,778.55/x
  3. Step 3: Cross multiply
    2,601.42x = 3,899.97 × 1,778.55
  4. Step 4: Simplify right side
    2,601.42x = 6,936,291.64
  5. Step 5: Solve for x
    x = 6,936,291.64/2,601.42
  6. Step 6: Final answer
    x = 2,666.35

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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.