Home / 2,842.40-4,263.60-1,200.80

Finding the Fourth Proportional to 2,842.40, 4,263.60 and 1,200.80

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Solution

The fourth proportional to 2,842.40, 4,263.60 and 1,200.80 is: 1,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,842.40 : 4,263.60 = 1,200.80 : x
  2. Step 2: Convert to fraction form
    2,842.40/4,263.60 = 1,200.80/x
  3. Step 3: Cross multiply
    2,842.40x = 4,263.60 × 1,200.80
  4. Step 4: Simplify right side
    2,842.40x = 5,119,730.88
  5. Step 5: Solve for x
    x = 5,119,730.88/2,842.40
  6. Step 6: Final answer
    x = 1,801.20

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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.