Home / 5,185.25-7,778.61-1,897.55

Finding the Fourth Proportional to 5,185.25, 7,778.61 and 1,897.55

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Solution

The fourth proportional to 5,185.25, 7,778.61 and 1,897.55 is: 2,846.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.25 : 7,778.61 = 1,897.55 : x
  2. Step 2: Convert to fraction form
    5,185.25/7,778.61 = 1,897.55/x
  3. Step 3: Cross multiply
    5,185.25x = 7,778.61 × 1,897.55
  4. Step 4: Simplify right side
    5,185.25x = 14,760,301.41
  5. Step 5: Solve for x
    x = 14,760,301.41/5,185.25
  6. Step 6: Final answer
    x = 2,846.59

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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.