Home / 3,462.40-4,778.22-1,890.64

Finding the Fourth Proportional to 3,462.40, 4,778.22 and 1,890.64

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Solution

The fourth proportional to 3,462.40, 4,778.22 and 1,890.64 is: 2,609.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,462.40 : 4,778.22 = 1,890.64 : x
  2. Step 2: Convert to fraction form
    3,462.40/4,778.22 = 1,890.64/x
  3. Step 3: Cross multiply
    3,462.40x = 4,778.22 × 1,890.64
  4. Step 4: Simplify right side
    3,462.40x = 9,033,893.86
  5. Step 5: Solve for x
    x = 9,033,893.86/3,462.40
  6. Step 6: Final answer
    x = 2,609.14

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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.