Home / 2,759.86-4,139.73-1,298.20

Finding the Fourth Proportional to 2,759.86, 4,139.73 and 1,298.20

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Solution

The fourth proportional to 2,759.86, 4,139.73 and 1,298.20 is: 1,947.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.86 : 4,139.73 = 1,298.20 : x
  2. Step 2: Convert to fraction form
    2,759.86/4,139.73 = 1,298.20/x
  3. Step 3: Cross multiply
    2,759.86x = 4,139.73 × 1,298.20
  4. Step 4: Simplify right side
    2,759.86x = 5,374,197.49
  5. Step 5: Solve for x
    x = 5,374,197.49/2,759.86
  6. Step 6: Final answer
    x = 1,947.27

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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.