Home / 3,031.57-4,182.46-1,985.05

Finding the Fourth Proportional to 3,031.57, 4,182.46 and 1,985.05

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Solution

The fourth proportional to 3,031.57, 4,182.46 and 1,985.05 is: 2,738.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.57 : 4,182.46 = 1,985.05 : x
  2. Step 2: Convert to fraction form
    3,031.57/4,182.46 = 1,985.05/x
  3. Step 3: Cross multiply
    3,031.57x = 4,182.46 × 1,985.05
  4. Step 4: Simplify right side
    3,031.57x = 8,302,392.22
  5. Step 5: Solve for x
    x = 8,302,392.22/3,031.57
  6. Step 6: Final answer
    x = 2,738.64

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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.