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Finding the Fourth Proportional to 2,974.80, 4,462.20 and 2,492.40

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Solution

The fourth proportional to 2,974.80, 4,462.20 and 2,492.40 is: 3,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.80 : 4,462.20 = 2,492.40 : x
  2. Step 2: Convert to fraction form
    2,974.80/4,462.20 = 2,492.40/x
  3. Step 3: Cross multiply
    2,974.80x = 4,462.20 × 2,492.40
  4. Step 4: Simplify right side
    2,974.80x = 11,121,587.28
  5. Step 5: Solve for x
    x = 11,121,587.28/2,974.80
  6. Step 6: Final answer
    x = 3,738.60

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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.