Home / 1,519.77-2,097.43-890.26

Finding the Fourth Proportional to 1,519.77, 2,097.43 and 890.26

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Solution

The fourth proportional to 1,519.77, 2,097.43 and 890.26 is: 1,228.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.77 : 2,097.43 = 890.26 : x
  2. Step 2: Convert to fraction form
    1,519.77/2,097.43 = 890.26/x
  3. Step 3: Cross multiply
    1,519.77x = 2,097.43 × 890.26
  4. Step 4: Simplify right side
    1,519.77x = 1,867,243.09
  5. Step 5: Solve for x
    x = 1,867,243.09/1,519.77
  6. Step 6: Final answer
    x = 1,228.64

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1.5x scale

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.