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Finding the Fourth Proportional to 3,783.51, 5,220.86 and 2,104.92

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Solution

The fourth proportional to 3,783.51, 5,220.86 and 2,104.92 is: 2,904.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.51 : 5,220.86 = 2,104.92 : x
  2. Step 2: Convert to fraction form
    3,783.51/5,220.86 = 2,104.92/x
  3. Step 3: Cross multiply
    3,783.51x = 5,220.86 × 2,104.92
  4. Step 4: Simplify right side
    3,783.51x = 10,989,482.11
  5. Step 5: Solve for x
    x = 10,989,482.11/3,783.51
  6. Step 6: Final answer
    x = 2,904.57

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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.