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Finding the Fourth Proportional to 7,408.06, 10,220.04 and 4,855.12

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Solution

The fourth proportional to 7,408.06, 10,220.04 and 4,855.12 is: 6,698.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.06 : 10,220.04 = 4,855.12 : x
  2. Step 2: Convert to fraction form
    7,408.06/10,220.04 = 4,855.12/x
  3. Step 3: Cross multiply
    7,408.06x = 10,220.04 × 4,855.12
  4. Step 4: Simplify right side
    7,408.06x = 49,619,495.05
  5. Step 5: Solve for x
    x = 49,619,495.05/7,408.06
  6. Step 6: Final answer
    x = 6,698.04

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.