Home / 2,033.60-2,807.70-1,287.80

Finding the Fourth Proportional to 2,033.60, 2,807.70 and 1,287.80

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Solution

The fourth proportional to 2,033.60, 2,807.70 and 1,287.80 is: 1,778.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,033.60 : 2,807.70 = 1,287.80 : x
  2. Step 2: Convert to fraction form
    2,033.60/2,807.70 = 1,287.80/x
  3. Step 3: Cross multiply
    2,033.60x = 2,807.70 × 1,287.80
  4. Step 4: Simplify right side
    2,033.60x = 3,615,756.06
  5. Step 5: Solve for x
    x = 3,615,756.06/2,033.60
  6. Step 6: Final answer
    x = 1,778.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.