Home / 3,492.96-5,215.20-3,143.04

Finding the Fourth Proportional to 3,492.96, 5,215.20 and 3,143.04

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Solution

The fourth proportional to 3,492.96, 5,215.20 and 3,143.04 is: 4,692.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492.96 : 5,215.20 = 3,143.04 : x
  2. Step 2: Convert to fraction form
    3,492.96/5,215.20 = 3,143.04/x
  3. Step 3: Cross multiply
    3,492.96x = 5,215.20 × 3,143.04
  4. Step 4: Simplify right side
    3,492.96x = 16,391,582.21
  5. Step 5: Solve for x
    x = 16,391,582.21/3,492.96
  6. Step 6: Final answer
    x = 4,692.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.