Home / 1,938.89-2,670.97-1,440.67

Finding the Fourth Proportional to 1,938.89, 2,670.97 and 1,440.67

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Solution

The fourth proportional to 1,938.89, 2,670.97 and 1,440.67 is: 1,984.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.89 : 2,670.97 = 1,440.67 : x
  2. Step 2: Convert to fraction form
    1,938.89/2,670.97 = 1,440.67/x
  3. Step 3: Cross multiply
    1,938.89x = 2,670.97 × 1,440.67
  4. Step 4: Simplify right side
    1,938.89x = 3,847,976.07
  5. Step 5: Solve for x
    x = 3,847,976.07/1,938.89
  6. Step 6: Final answer
    x = 1,984.63

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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.