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Finding the Fourth Proportional to 2,657.41, 3,986.13 and 926.03

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Solution

The fourth proportional to 2,657.41, 3,986.13 and 926.03 is: 1,389.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.41 : 3,986.13 = 926.03 : x
  2. Step 2: Convert to fraction form
    2,657.41/3,986.13 = 926.03/x
  3. Step 3: Cross multiply
    2,657.41x = 3,986.13 × 926.03
  4. Step 4: Simplify right side
    2,657.41x = 3,691,275.96
  5. Step 5: Solve for x
    x = 3,691,275.96/2,657.41
  6. Step 6: Final answer
    x = 1,389.05

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Similar ratio
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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.