Home / 3,075.80-4,610.82-1,515.20

Finding the Fourth Proportional to 3,075.80, 4,610.82 and 1,515.20

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Solution

The fourth proportional to 3,075.80, 4,610.82 and 1,515.20 is: 2,271.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,075.80 : 4,610.82 = 1,515.20 : x
  2. Step 2: Convert to fraction form
    3,075.80/4,610.82 = 1,515.20/x
  3. Step 3: Cross multiply
    3,075.80x = 4,610.82 × 1,515.20
  4. Step 4: Simplify right side
    3,075.80x = 6,986,314.46
  5. Step 5: Solve for x
    x = 6,986,314.46/3,075.80
  6. Step 6: Final answer
    x = 2,271.38

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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.