Home / 5,107.20-7,622.40-4,492.80

Finding the Fourth Proportional to 5,107.20, 7,622.40 and 4,492.80

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Solution

The fourth proportional to 5,107.20, 7,622.40 and 4,492.80 is: 6,705.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.20 : 7,622.40 = 4,492.80 : x
  2. Step 2: Convert to fraction form
    5,107.20/7,622.40 = 4,492.80/x
  3. Step 3: Cross multiply
    5,107.20x = 7,622.40 × 4,492.80
  4. Step 4: Simplify right side
    5,107.20x = 34,245,918.72
  5. Step 5: Solve for x
    x = 34,245,918.72/5,107.20
  6. Step 6: Final answer
    x = 6,705.42

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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.