Home / 3,057.64-4,218.96-1,938.76

Finding the Fourth Proportional to 3,057.64, 4,218.96 and 1,938.76

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Solution

The fourth proportional to 3,057.64, 4,218.96 and 1,938.76 is: 2,675.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.64 : 4,218.96 = 1,938.76 : x
  2. Step 2: Convert to fraction form
    3,057.64/4,218.96 = 1,938.76/x
  3. Step 3: Cross multiply
    3,057.64x = 4,218.96 × 1,938.76
  4. Step 4: Simplify right side
    3,057.64x = 8,179,550.89
  5. Step 5: Solve for x
    x = 8,179,550.89/3,057.64
  6. Step 6: Final answer
    x = 2,675.12

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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.