Home / 2,170.20-2,994.72-1,286.06

Finding the Fourth Proportional to 2,170.20, 2,994.72 and 1,286.06

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Solution

The fourth proportional to 2,170.20, 2,994.72 and 1,286.06 is: 1,774.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.20 : 2,994.72 = 1,286.06 : x
  2. Step 2: Convert to fraction form
    2,170.20/2,994.72 = 1,286.06/x
  3. Step 3: Cross multiply
    2,170.20x = 2,994.72 × 1,286.06
  4. Step 4: Simplify right side
    2,170.20x = 3,851,389.60
  5. Step 5: Solve for x
    x = 3,851,389.60/2,170.20
  6. Step 6: Final answer
    x = 1,774.67

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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.