Home / 1,628.39-2,439.68-1,394.99

Finding the Fourth Proportional to 1,628.39, 2,439.68 and 1,394.99

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Solution

The fourth proportional to 1,628.39, 2,439.68 and 1,394.99 is: 2,089.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.39 : 2,439.68 = 1,394.99 : x
  2. Step 2: Convert to fraction form
    1,628.39/2,439.68 = 1,394.99/x
  3. Step 3: Cross multiply
    1,628.39x = 2,439.68 × 1,394.99
  4. Step 4: Simplify right side
    1,628.39x = 3,403,322.23
  5. Step 5: Solve for x
    x = 3,403,322.23/1,628.39
  6. Step 6: Final answer
    x = 2,089.99

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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.