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Finding the Fourth Proportional to 3,165.89, 4,368.13 and 1,905.93

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Solution

The fourth proportional to 3,165.89, 4,368.13 and 1,905.93 is: 2,629.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.89 : 4,368.13 = 1,905.93 : x
  2. Step 2: Convert to fraction form
    3,165.89/4,368.13 = 1,905.93/x
  3. Step 3: Cross multiply
    3,165.89x = 4,368.13 × 1,905.93
  4. Step 4: Simplify right side
    3,165.89x = 8,325,345.25
  5. Step 5: Solve for x
    x = 8,325,345.25/3,165.89
  6. Step 6: Final answer
    x = 2,629.71

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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.