Home / 2,831.22-4,243.80-1,075.40

Finding the Fourth Proportional to 2,831.22, 4,243.80 and 1,075.40

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Solution

The fourth proportional to 2,831.22, 4,243.80 and 1,075.40 is: 1,611.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.22 : 4,243.80 = 1,075.40 : x
  2. Step 2: Convert to fraction form
    2,831.22/4,243.80 = 1,075.40/x
  3. Step 3: Cross multiply
    2,831.22x = 4,243.80 × 1,075.40
  4. Step 4: Simplify right side
    2,831.22x = 4,563,782.52
  5. Step 5: Solve for x
    x = 4,563,782.52/2,831.22
  6. Step 6: Final answer
    x = 1,611.95

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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.