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Finding the Fourth Proportional to 2,951.39, 4,428.09 and 1,719.87

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Solution

The fourth proportional to 2,951.39, 4,428.09 and 1,719.87 is: 2,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.39 : 4,428.09 = 1,719.87 : x
  2. Step 2: Convert to fraction form
    2,951.39/4,428.09 = 1,719.87/x
  3. Step 3: Cross multiply
    2,951.39x = 4,428.09 × 1,719.87
  4. Step 4: Simplify right side
    2,951.39x = 7,615,739.15
  5. Step 5: Solve for x
    x = 7,615,739.15/2,951.39
  6. Step 6: Final answer
    x = 2,580.40

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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.