Home / 2,830.40-4,245.60-2,625.60

Finding the Fourth Proportional to 2,830.40, 4,245.60 and 2,625.60

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Solution

The fourth proportional to 2,830.40, 4,245.60 and 2,625.60 is: 3,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.40 : 4,245.60 = 2,625.60 : x
  2. Step 2: Convert to fraction form
    2,830.40/4,245.60 = 2,625.60/x
  3. Step 3: Cross multiply
    2,830.40x = 4,245.60 × 2,625.60
  4. Step 4: Simplify right side
    2,830.40x = 11,147,247.36
  5. Step 5: Solve for x
    x = 11,147,247.36/2,830.40
  6. Step 6: Final answer
    x = 3,938.40

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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.