Home / 2,775.89-3,831.35-1,893.80

Finding the Fourth Proportional to 2,775.89, 3,831.35 and 1,893.80

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Solution

The fourth proportional to 2,775.89, 3,831.35 and 1,893.80 is: 2,613.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.89 : 3,831.35 = 1,893.80 : x
  2. Step 2: Convert to fraction form
    2,775.89/3,831.35 = 1,893.80/x
  3. Step 3: Cross multiply
    2,775.89x = 3,831.35 × 1,893.80
  4. Step 4: Simplify right side
    2,775.89x = 7,255,782.00
  5. Step 5: Solve for x
    x = 7,255,782.00/2,775.89
  6. Step 6: Final answer
    x = 2,613.86

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1.5x scale

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.