Home / 2,072.30-2,860.92-1,512.20

Finding the Fourth Proportional to 2,072.30, 2,860.92 and 1,512.20

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Solution

The fourth proportional to 2,072.30, 2,860.92 and 1,512.20 is: 2,087.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.30 : 2,860.92 = 1,512.20 : x
  2. Step 2: Convert to fraction form
    2,072.30/2,860.92 = 1,512.20/x
  3. Step 3: Cross multiply
    2,072.30x = 2,860.92 × 1,512.20
  4. Step 4: Simplify right side
    2,072.30x = 4,326,283.22
  5. Step 5: Solve for x
    x = 4,326,283.22/2,072.30
  6. Step 6: Final answer
    x = 2,087.67

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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.