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Finding the Fourth Proportional to 3,460.12, 5,189.76 and 994.88

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Solution

The fourth proportional to 3,460.12, 5,189.76 and 994.88 is: 1,492.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.12 : 5,189.76 = 994.88 : x
  2. Step 2: Convert to fraction form
    3,460.12/5,189.76 = 994.88/x
  3. Step 3: Cross multiply
    3,460.12x = 5,189.76 × 994.88
  4. Step 4: Simplify right side
    3,460.12x = 5,163,188.43
  5. Step 5: Solve for x
    x = 5,163,188.43/3,460.12
  6. Step 6: Final answer
    x = 1,492.20

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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.