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Finding the Fourth Proportional to 1,461.92, 2,017.92 and 965

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Solution

The fourth proportional to 1,461.92, 2,017.92 and 965 is: 1,332.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.92 : 2,017.92 = 965 : x
  2. Step 2: Convert to fraction form
    1,461.92/2,017.92 = 965/x
  3. Step 3: Cross multiply
    1,461.92x = 2,017.92 × 965
  4. Step 4: Simplify right side
    1,461.92x = 1,947,292.80
  5. Step 5: Solve for x
    x = 1,947,292.80/1,461.92
  6. Step 6: Final answer
    x = 1,332.01

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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.