Home / 1,660.47-2,289.38-1,396.95

Finding the Fourth Proportional to 1,660.47, 2,289.38 and 1,396.95

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Solution

The fourth proportional to 1,660.47, 2,289.38 and 1,396.95 is: 1,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.47 : 2,289.38 = 1,396.95 : x
  2. Step 2: Convert to fraction form
    1,660.47/2,289.38 = 1,396.95/x
  3. Step 3: Cross multiply
    1,660.47x = 2,289.38 × 1,396.95
  4. Step 4: Simplify right side
    1,660.47x = 3,198,142.41
  5. Step 5: Solve for x
    x = 3,198,142.41/1,660.47
  6. Step 6: Final answer
    x = 1,926.05

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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.