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Finding the Fourth Proportional to 3,107.65, 4,653.53 and 1,719.45

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Solution

The fourth proportional to 3,107.65, 4,653.53 and 1,719.45 is: 2,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.65 : 4,653.53 = 1,719.45 : x
  2. Step 2: Convert to fraction form
    3,107.65/4,653.53 = 1,719.45/x
  3. Step 3: Cross multiply
    3,107.65x = 4,653.53 × 1,719.45
  4. Step 4: Simplify right side
    3,107.65x = 8,001,512.16
  5. Step 5: Solve for x
    x = 8,001,512.16/3,107.65
  6. Step 6: Final answer
    x = 2,574.78

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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.