Home / 2,617.23-3,926.21-768.47

Finding the Fourth Proportional to 2,617.23, 3,926.21 and 768.47

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Solution

The fourth proportional to 2,617.23, 3,926.21 and 768.47 is: 1,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.23 : 3,926.21 = 768.47 : x
  2. Step 2: Convert to fraction form
    2,617.23/3,926.21 = 768.47/x
  3. Step 3: Cross multiply
    2,617.23x = 3,926.21 × 768.47
  4. Step 4: Simplify right side
    2,617.23x = 3,017,180.57
  5. Step 5: Solve for x
    x = 3,017,180.57/2,617.23
  6. Step 6: Final answer
    x = 1,152.81

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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.