Home / 3,720.34-5,579.79-1,122.67

Finding the Fourth Proportional to 3,720.34, 5,579.79 and 1,122.67

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Solution

The fourth proportional to 3,720.34, 5,579.79 and 1,122.67 is: 1,683.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.34 : 5,579.79 = 1,122.67 : x
  2. Step 2: Convert to fraction form
    3,720.34/5,579.79 = 1,122.67/x
  3. Step 3: Cross multiply
    3,720.34x = 5,579.79 × 1,122.67
  4. Step 4: Simplify right side
    3,720.34x = 6,264,262.84
  5. Step 5: Solve for x
    x = 6,264,262.84/3,720.34
  6. Step 6: Final answer
    x = 1,683.79

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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.