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Finding the Fourth Proportional to 4,813.48, 7,220.22 and 1,890.19

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Solution

The fourth proportional to 4,813.48, 7,220.22 and 1,890.19 is: 2,835.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,813.48 : 7,220.22 = 1,890.19 : x
  2. Step 2: Convert to fraction form
    4,813.48/7,220.22 = 1,890.19/x
  3. Step 3: Cross multiply
    4,813.48x = 7,220.22 × 1,890.19
  4. Step 4: Simplify right side
    4,813.48x = 13,647,587.64
  5. Step 5: Solve for x
    x = 13,647,587.64/4,813.48
  6. Step 6: Final answer
    x = 2,835.29

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Double scale
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Similar ratio
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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.