Home / 5,185.49-7,778.97-1,897.79

Finding the Fourth Proportional to 5,185.49, 7,778.97 and 1,897.79

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Solution

The fourth proportional to 5,185.49, 7,778.97 and 1,897.79 is: 2,846.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.49 : 7,778.97 = 1,897.79 : x
  2. Step 2: Convert to fraction form
    5,185.49/7,778.97 = 1,897.79/x
  3. Step 3: Cross multiply
    5,185.49x = 7,778.97 × 1,897.79
  4. Step 4: Simplify right side
    5,185.49x = 14,762,812.58
  5. Step 5: Solve for x
    x = 14,762,812.58/5,185.49
  6. Step 6: Final answer
    x = 2,846.95

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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.