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Finding the Fourth Proportional to 3,185.99, 4,778.98 and 994.91

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Solution

The fourth proportional to 3,185.99, 4,778.98 and 994.91 is: 1,492.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.99 : 4,778.98 = 994.91 : x
  2. Step 2: Convert to fraction form
    3,185.99/4,778.98 = 994.91/x
  3. Step 3: Cross multiply
    3,185.99x = 4,778.98 × 994.91
  4. Step 4: Simplify right side
    3,185.99x = 4,754,632.34
  5. Step 5: Solve for x
    x = 4,754,632.34/3,185.99
  6. Step 6: Final answer
    x = 1,492.36

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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.