Home / 3,462.70-4,778.50-1,890.78

Finding the Fourth Proportional to 3,462.70, 4,778.50 and 1,890.78

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Solution

The fourth proportional to 3,462.70, 4,778.50 and 1,890.78 is: 2,609.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,462.70 : 4,778.50 = 1,890.78 : x
  2. Step 2: Convert to fraction form
    3,462.70/4,778.50 = 1,890.78/x
  3. Step 3: Cross multiply
    3,462.70x = 4,778.50 × 1,890.78
  4. Step 4: Simplify right side
    3,462.70x = 9,035,092.23
  5. Step 5: Solve for x
    x = 9,035,092.23/3,462.70
  6. Step 6: Final answer
    x = 2,609.26

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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.