Home / 1,890.74-2,609.45-1,144.68

Finding the Fourth Proportional to 1,890.74, 2,609.45 and 1,144.68

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Solution

The fourth proportional to 1,890.74, 2,609.45 and 1,144.68 is: 1,579.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.74 : 2,609.45 = 1,144.68 : x
  2. Step 2: Convert to fraction form
    1,890.74/2,609.45 = 1,144.68/x
  3. Step 3: Cross multiply
    1,890.74x = 2,609.45 × 1,144.68
  4. Step 4: Simplify right side
    1,890.74x = 2,986,971.86
  5. Step 5: Solve for x
    x = 2,986,971.86/1,890.74
  6. Step 6: Final answer
    x = 1,579.79

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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.