Home / 1,740.72-2,609.25-1,277.80

Finding the Fourth Proportional to 1,740.72, 2,609.25 and 1,277.80

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Solution

The fourth proportional to 1,740.72, 2,609.25 and 1,277.80 is: 1,915.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.72 : 2,609.25 = 1,277.80 : x
  2. Step 2: Convert to fraction form
    1,740.72/2,609.25 = 1,277.80/x
  3. Step 3: Cross multiply
    1,740.72x = 2,609.25 × 1,277.80
  4. Step 4: Simplify right side
    1,740.72x = 3,334,099.65
  5. Step 5: Solve for x
    x = 3,334,099.65/1,740.72
  6. Step 6: Final answer
    x = 1,915.36

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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.