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Finding the Fourth Proportional to 3,460.79, 5,190.55 and 995.11

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Solution

The fourth proportional to 3,460.79, 5,190.55 and 995.11 is: 1,492.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.79 : 5,190.55 = 995.11 : x
  2. Step 2: Convert to fraction form
    3,460.79/5,190.55 = 995.11/x
  3. Step 3: Cross multiply
    3,460.79x = 5,190.55 × 995.11
  4. Step 4: Simplify right side
    3,460.79x = 5,165,152.75
  5. Step 5: Solve for x
    x = 5,165,152.75/3,460.79
  6. Step 6: Final answer
    x = 1,492.48

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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.