Home / 2,775.52-4,165.44-1,388.80

Finding the Fourth Proportional to 2,775.52, 4,165.44 and 1,388.80

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Solution

The fourth proportional to 2,775.52, 4,165.44 and 1,388.80 is: 2,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.52 : 4,165.44 = 1,388.80 : x
  2. Step 2: Convert to fraction form
    2,775.52/4,165.44 = 1,388.80/x
  3. Step 3: Cross multiply
    2,775.52x = 4,165.44 × 1,388.80
  4. Step 4: Simplify right side
    2,775.52x = 5,784,963.07
  5. Step 5: Solve for x
    x = 5,784,963.07/2,775.52
  6. Step 6: Final answer
    x = 2,084.28

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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.