Home / 3,313.30-4,969.95-2,778.70

Finding the Fourth Proportional to 3,313.30, 4,969.95 and 2,778.70

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Solution

The fourth proportional to 3,313.30, 4,969.95 and 2,778.70 is: 4,168.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.30 : 4,969.95 = 2,778.70 : x
  2. Step 2: Convert to fraction form
    3,313.30/4,969.95 = 2,778.70/x
  3. Step 3: Cross multiply
    3,313.30x = 4,969.95 × 2,778.70
  4. Step 4: Simplify right side
    3,313.30x = 13,810,000.07
  5. Step 5: Solve for x
    x = 13,810,000.07/3,313.30
  6. Step 6: Final answer
    x = 4,168.05

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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.