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Finding the Fourth Proportional to 2,955, 4,431.62 and 1,394.13

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Solution

The fourth proportional to 2,955, 4,431.62 and 1,394.13 is: 2,090.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955 : 4,431.62 = 1,394.13 : x
  2. Step 2: Convert to fraction form
    2,955/4,431.62 = 1,394.13/x
  3. Step 3: Cross multiply
    2,955x = 4,431.62 × 1,394.13
  4. Step 4: Simplify right side
    2,955x = 6,178,254.39
  5. Step 5: Solve for x
    x = 6,178,254.39/2,955
  6. Step 6: Final answer
    x = 2,090.78

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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.