Home / 4,200.20-6,300.30-1,080.21

Finding the Fourth Proportional to 4,200.20, 6,300.30 and 1,080.21

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Solution

The fourth proportional to 4,200.20, 6,300.30 and 1,080.21 is: 1,620.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,200.20 : 6,300.30 = 1,080.21 : x
  2. Step 2: Convert to fraction form
    4,200.20/6,300.30 = 1,080.21/x
  3. Step 3: Cross multiply
    4,200.20x = 6,300.30 × 1,080.21
  4. Step 4: Simplify right side
    4,200.20x = 6,805,647.06
  5. Step 5: Solve for x
    x = 6,805,647.06/4,200.20
  6. Step 6: Final answer
    x = 1,620.32

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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.