Home / 2,938.15-4,054.86-1,941.70

Finding the Fourth Proportional to 2,938.15, 4,054.86 and 1,941.70

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Solution

The fourth proportional to 2,938.15, 4,054.86 and 1,941.70 is: 2,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.15 : 4,054.86 = 1,941.70 : x
  2. Step 2: Convert to fraction form
    2,938.15/4,054.86 = 1,941.70/x
  3. Step 3: Cross multiply
    2,938.15x = 4,054.86 × 1,941.70
  4. Step 4: Simplify right side
    2,938.15x = 7,873,321.66
  5. Step 5: Solve for x
    x = 7,873,321.66/2,938.15
  6. Step 6: Final answer
    x = 2,679.69

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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.