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Finding the Fourth Proportional to 1,673.65, 2,309.72 and 965.62

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Solution

The fourth proportional to 1,673.65, 2,309.72 and 965.62 is: 1,332.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.65 : 2,309.72 = 965.62 : x
  2. Step 2: Convert to fraction form
    1,673.65/2,309.72 = 965.62/x
  3. Step 3: Cross multiply
    1,673.65x = 2,309.72 × 965.62
  4. Step 4: Simplify right side
    1,673.65x = 2,230,311.83
  5. Step 5: Solve for x
    x = 2,230,311.83/1,673.65
  6. Step 6: Final answer
    x = 1,332.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.