Home / 2,617.23-3,926.40-768.21

Finding the Fourth Proportional to 2,617.23, 3,926.40 and 768.21

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Solution

The fourth proportional to 2,617.23, 3,926.40 and 768.21 is: 1,152.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.23 : 3,926.40 = 768.21 : x
  2. Step 2: Convert to fraction form
    2,617.23/3,926.40 = 768.21/x
  3. Step 3: Cross multiply
    2,617.23x = 3,926.40 × 768.21
  4. Step 4: Simplify right side
    2,617.23x = 3,016,299.74
  5. Step 5: Solve for x
    x = 3,016,299.74/2,617.23
  6. Step 6: Final answer
    x = 1,152.48

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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.