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Finding the Fourth Proportional to 2,417.65, 3,620.09 and 1,957.16

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Solution

The fourth proportional to 2,417.65, 3,620.09 and 1,957.16 is: 2,930.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,417.65 : 3,620.09 = 1,957.16 : x
  2. Step 2: Convert to fraction form
    2,417.65/3,620.09 = 1,957.16/x
  3. Step 3: Cross multiply
    2,417.65x = 3,620.09 × 1,957.16
  4. Step 4: Simplify right side
    2,417.65x = 7,085,109.29
  5. Step 5: Solve for x
    x = 7,085,109.29/2,417.65
  6. Step 6: Final answer
    x = 2,930.58

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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.