Home / 2,990.67-4,486.19-1,259.43

Finding the Fourth Proportional to 2,990.67, 4,486.19 and 1,259.43

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Solution

The fourth proportional to 2,990.67, 4,486.19 and 1,259.43 is: 1,889.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.67 : 4,486.19 = 1,259.43 : x
  2. Step 2: Convert to fraction form
    2,990.67/4,486.19 = 1,259.43/x
  3. Step 3: Cross multiply
    2,990.67x = 4,486.19 × 1,259.43
  4. Step 4: Simplify right side
    2,990.67x = 5,650,035.97
  5. Step 5: Solve for x
    x = 5,650,035.97/2,990.67
  6. Step 6: Final answer
    x = 1,889.22

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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.