Home / 3,075.15-4,243.73-1,677.90

Finding the Fourth Proportional to 3,075.15, 4,243.73 and 1,677.90

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Solution

The fourth proportional to 3,075.15, 4,243.73 and 1,677.90 is: 2,315.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.15 : 4,243.73 = 1,677.90 : x
  2. Step 2: Convert to fraction form
    3,075.15/4,243.73 = 1,677.90/x
  3. Step 3: Cross multiply
    3,075.15x = 4,243.73 × 1,677.90
  4. Step 4: Simplify right side
    3,075.15x = 7,120,546.18
  5. Step 5: Solve for x
    x = 7,120,546.18/3,075.15
  6. Step 6: Final answer
    x = 2,315.51

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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.