Home / 3,254.80-4,878.70-1,406.79

Finding the Fourth Proportional to 3,254.80, 4,878.70 and 1,406.79

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Solution

The fourth proportional to 3,254.80, 4,878.70 and 1,406.79 is: 2,108.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,254.80 : 4,878.70 = 1,406.79 : x
  2. Step 2: Convert to fraction form
    3,254.80/4,878.70 = 1,406.79/x
  3. Step 3: Cross multiply
    3,254.80x = 4,878.70 × 1,406.79
  4. Step 4: Simplify right side
    3,254.80x = 6,863,306.37
  5. Step 5: Solve for x
    x = 6,863,306.37/3,254.80
  6. Step 6: Final answer
    x = 2,108.67

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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.