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Finding the Fourth Proportional to 2,951.65, 4,426.20 and 1,719.91

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Solution

The fourth proportional to 2,951.65, 4,426.20 and 1,719.91 is: 2,579.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.65 : 4,426.20 = 1,719.91 : x
  2. Step 2: Convert to fraction form
    2,951.65/4,426.20 = 1,719.91/x
  3. Step 3: Cross multiply
    2,951.65x = 4,426.20 × 1,719.91
  4. Step 4: Simplify right side
    2,951.65x = 7,612,665.64
  5. Step 5: Solve for x
    x = 7,612,665.64/2,951.65
  6. Step 6: Final answer
    x = 2,579.12

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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.