Home / 4,276.14-6,405.20-2,189.80

Finding the Fourth Proportional to 4,276.14, 6,405.20 and 2,189.80

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Solution

The fourth proportional to 4,276.14, 6,405.20 and 2,189.80 is: 3,280.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,276.14 : 6,405.20 = 2,189.80 : x
  2. Step 2: Convert to fraction form
    4,276.14/6,405.20 = 2,189.80/x
  3. Step 3: Cross multiply
    4,276.14x = 6,405.20 × 2,189.80
  4. Step 4: Simplify right side
    4,276.14x = 14,026,106.96
  5. Step 5: Solve for x
    x = 14,026,106.96/4,276.14
  6. Step 6: Final answer
    x = 3,280.09

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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.