Home / 1,965.28-2,946.42-1,272.64

Finding the Fourth Proportional to 1,965.28, 2,946.42 and 1,272.64

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Solution

The fourth proportional to 1,965.28, 2,946.42 and 1,272.64 is: 1,907.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.28 : 2,946.42 = 1,272.64 : x
  2. Step 2: Convert to fraction form
    1,965.28/2,946.42 = 1,272.64/x
  3. Step 3: Cross multiply
    1,965.28x = 2,946.42 × 1,272.64
  4. Step 4: Simplify right side
    1,965.28x = 3,749,731.95
  5. Step 5: Solve for x
    x = 3,749,731.95/1,965.28
  6. Step 6: Final answer
    x = 1,907.99

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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.