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Finding the Fourth Proportional to 4,906.74, 7,360.04 and 1,209

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Solution

The fourth proportional to 4,906.74, 7,360.04 and 1,209 is: 1,813.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,906.74 : 7,360.04 = 1,209 : x
  2. Step 2: Convert to fraction form
    4,906.74/7,360.04 = 1,209/x
  3. Step 3: Cross multiply
    4,906.74x = 7,360.04 × 1,209
  4. Step 4: Simplify right side
    4,906.74x = 8,898,288.36
  5. Step 5: Solve for x
    x = 8,898,288.36/4,906.74
  6. Step 6: Final answer
    x = 1,813.48

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Double scale
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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.