Home / 2,690.21-4,031.06-2,075.42

Finding the Fourth Proportional to 2,690.21, 4,031.06 and 2,075.42

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Solution

The fourth proportional to 2,690.21, 4,031.06 and 2,075.42 is: 3,109.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.21 : 4,031.06 = 2,075.42 : x
  2. Step 2: Convert to fraction form
    2,690.21/4,031.06 = 2,075.42/x
  3. Step 3: Cross multiply
    2,690.21x = 4,031.06 × 2,075.42
  4. Step 4: Simplify right side
    2,690.21x = 8,366,142.25
  5. Step 5: Solve for x
    x = 8,366,142.25/2,690.21
  6. Step 6: Final answer
    x = 3,109.84

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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.