Home / 3,720.44-5,581.70-1,123.40

Finding the Fourth Proportional to 3,720.44, 5,581.70 and 1,123.40

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Solution

The fourth proportional to 3,720.44, 5,581.70 and 1,123.40 is: 1,685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.44 : 5,581.70 = 1,123.40 : x
  2. Step 2: Convert to fraction form
    3,720.44/5,581.70 = 1,123.40/x
  3. Step 3: Cross multiply
    3,720.44x = 5,581.70 × 1,123.40
  4. Step 4: Simplify right side
    3,720.44x = 6,270,481.78
  5. Step 5: Solve for x
    x = 6,270,481.78/3,720.44
  6. Step 6: Final answer
    x = 1,685.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.