Home / 2,980.68-4,113.36-1,932.75

Finding the Fourth Proportional to 2,980.68, 4,113.36 and 1,932.75

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Solution

The fourth proportional to 2,980.68, 4,113.36 and 1,932.75 is: 2,667.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.68 : 4,113.36 = 1,932.75 : x
  2. Step 2: Convert to fraction form
    2,980.68/4,113.36 = 1,932.75/x
  3. Step 3: Cross multiply
    2,980.68x = 4,113.36 × 1,932.75
  4. Step 4: Simplify right side
    2,980.68x = 7,950,096.54
  5. Step 5: Solve for x
    x = 7,950,096.54/2,980.68
  6. Step 6: Final answer
    x = 2,667.21

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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.