Home / 3,462.90-4,778.60-1,890.68

Finding the Fourth Proportional to 3,462.90, 4,778.60 and 1,890.68

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Solution

The fourth proportional to 3,462.90, 4,778.60 and 1,890.68 is: 2,609.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,462.90 : 4,778.60 = 1,890.68 : x
  2. Step 2: Convert to fraction form
    3,462.90/4,778.60 = 1,890.68/x
  3. Step 3: Cross multiply
    3,462.90x = 4,778.60 × 1,890.68
  4. Step 4: Simplify right side
    3,462.90x = 9,034,803.45
  5. Step 5: Solve for x
    x = 9,034,803.45/3,462.90
  6. Step 6: Final answer
    x = 2,609.03

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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.