Home / 2,990.43-4,487.58-1,259.07

Finding the Fourth Proportional to 2,990.43, 4,487.58 and 1,259.07

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Solution

The fourth proportional to 2,990.43, 4,487.58 and 1,259.07 is: 1,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.43 : 4,487.58 = 1,259.07 : x
  2. Step 2: Convert to fraction form
    2,990.43/4,487.58 = 1,259.07/x
  3. Step 3: Cross multiply
    2,990.43x = 4,487.58 × 1,259.07
  4. Step 4: Simplify right side
    2,990.43x = 5,650,177.35
  5. Step 5: Solve for x
    x = 5,650,177.35/2,990.43
  6. Step 6: Final answer
    x = 1,889.42

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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.