Home / 4,280.40-6,415.80-2,199.60

Finding the Fourth Proportional to 4,280.40, 6,415.80 and 2,199.60

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Solution

The fourth proportional to 4,280.40, 6,415.80 and 2,199.60 is: 3,296.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.40 : 6,415.80 = 2,199.60 : x
  2. Step 2: Convert to fraction form
    4,280.40/6,415.80 = 2,199.60/x
  3. Step 3: Cross multiply
    4,280.40x = 6,415.80 × 2,199.60
  4. Step 4: Simplify right side
    4,280.40x = 14,112,193.68
  5. Step 5: Solve for x
    x = 14,112,193.68/4,280.40
  6. Step 6: Final answer
    x = 3,296.93

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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.