Home / 3,126.85-4,315.44-1,800.67

Finding the Fourth Proportional to 3,126.85, 4,315.44 and 1,800.67

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Solution

The fourth proportional to 3,126.85, 4,315.44 and 1,800.67 is: 2,485.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.85 : 4,315.44 = 1,800.67 : x
  2. Step 2: Convert to fraction form
    3,126.85/4,315.44 = 1,800.67/x
  3. Step 3: Cross multiply
    3,126.85x = 4,315.44 × 1,800.67
  4. Step 4: Simplify right side
    3,126.85x = 7,770,683.34
  5. Step 5: Solve for x
    x = 7,770,683.34/3,126.85
  6. Step 6: Final answer
    x = 2,485.15

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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.