Home / 3,678.85-5,075.21-2,418.29

Finding the Fourth Proportional to 3,678.85, 5,075.21 and 2,418.29

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Solution

The fourth proportional to 3,678.85, 5,075.21 and 2,418.29 is: 3,336.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.85 : 5,075.21 = 2,418.29 : x
  2. Step 2: Convert to fraction form
    3,678.85/5,075.21 = 2,418.29/x
  3. Step 3: Cross multiply
    3,678.85x = 5,075.21 × 2,418.29
  4. Step 4: Simplify right side
    3,678.85x = 12,273,315.69
  5. Step 5: Solve for x
    x = 12,273,315.69/3,678.85
  6. Step 6: Final answer
    x = 3,336.18

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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.