Home / 4,285.20-6,427.80-1,206.80

Finding the Fourth Proportional to 4,285.20, 6,427.80 and 1,206.80

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Solution

The fourth proportional to 4,285.20, 6,427.80 and 1,206.80 is: 1,810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.20 : 6,427.80 = 1,206.80 : x
  2. Step 2: Convert to fraction form
    4,285.20/6,427.80 = 1,206.80/x
  3. Step 3: Cross multiply
    4,285.20x = 6,427.80 × 1,206.80
  4. Step 4: Simplify right side
    4,285.20x = 7,757,069.04
  5. Step 5: Solve for x
    x = 7,757,069.04/4,285.20
  6. Step 6: Final answer
    x = 1,810.20

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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.