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Finding the Fourth Proportional to 3,365.69, 4,640.90 and 2,893.05

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Solution

The fourth proportional to 3,365.69, 4,640.90 and 2,893.05 is: 3,989.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,365.69 : 4,640.90 = 2,893.05 : x
  2. Step 2: Convert to fraction form
    3,365.69/4,640.90 = 2,893.05/x
  3. Step 3: Cross multiply
    3,365.69x = 4,640.90 × 2,893.05
  4. Step 4: Simplify right side
    3,365.69x = 13,426,341.28
  5. Step 5: Solve for x
    x = 13,426,341.28/3,365.69
  6. Step 6: Final answer
    x = 3,989.19

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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.