Home / 1,789.39-2,684.08-490.86

Finding the Fourth Proportional to 1,789.39, 2,684.08 and 490.86

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Solution

The fourth proportional to 1,789.39, 2,684.08 and 490.86 is: 736.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.39 : 2,684.08 = 490.86 : x
  2. Step 2: Convert to fraction form
    1,789.39/2,684.08 = 490.86/x
  3. Step 3: Cross multiply
    1,789.39x = 2,684.08 × 490.86
  4. Step 4: Simplify right side
    1,789.39x = 1,317,508.74
  5. Step 5: Solve for x
    x = 1,317,508.74/1,789.39
  6. Step 6: Final answer
    x = 736.29

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1.5x scale

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.