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Finding the Fourth Proportional to 2,609.93, 3,914.90 and 662.13

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Solution

The fourth proportional to 2,609.93, 3,914.90 and 662.13 is: 993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.93 : 3,914.90 = 662.13 : x
  2. Step 2: Convert to fraction form
    2,609.93/3,914.90 = 662.13/x
  3. Step 3: Cross multiply
    2,609.93x = 3,914.90 × 662.13
  4. Step 4: Simplify right side
    2,609.93x = 2,592,172.74
  5. Step 5: Solve for x
    x = 2,592,172.74/2,609.93
  6. Step 6: Final answer
    x = 993.20

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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.