Home / 3,031.42-4,185.87-1,914.22

Finding the Fourth Proportional to 3,031.42, 4,185.87 and 1,914.22

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Solution

The fourth proportional to 3,031.42, 4,185.87 and 1,914.22 is: 2,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.42 : 4,185.87 = 1,914.22 : x
  2. Step 2: Convert to fraction form
    3,031.42/4,185.87 = 1,914.22/x
  3. Step 3: Cross multiply
    3,031.42x = 4,185.87 × 1,914.22
  4. Step 4: Simplify right side
    3,031.42x = 8,012,676.07
  5. Step 5: Solve for x
    x = 8,012,676.07/3,031.42
  6. Step 6: Final answer
    x = 2,643.21

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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.