Home / 3,970.42-5,955.38-1,778.56

Finding the Fourth Proportional to 3,970.42, 5,955.38 and 1,778.56

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Solution

The fourth proportional to 3,970.42, 5,955.38 and 1,778.56 is: 2,667.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.42 : 5,955.38 = 1,778.56 : x
  2. Step 2: Convert to fraction form
    3,970.42/5,955.38 = 1,778.56/x
  3. Step 3: Cross multiply
    3,970.42x = 5,955.38 × 1,778.56
  4. Step 4: Simplify right side
    3,970.42x = 10,592,000.65
  5. Step 5: Solve for x
    x = 10,592,000.65/3,970.42
  6. Step 6: Final answer
    x = 2,667.73

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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.