Home / 3,580.49-5,372.10-1,390.76

Finding the Fourth Proportional to 3,580.49, 5,372.10 and 1,390.76

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Solution

The fourth proportional to 3,580.49, 5,372.10 and 1,390.76 is: 2,086.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.49 : 5,372.10 = 1,390.76 : x
  2. Step 2: Convert to fraction form
    3,580.49/5,372.10 = 1,390.76/x
  3. Step 3: Cross multiply
    3,580.49x = 5,372.10 × 1,390.76
  4. Step 4: Simplify right side
    3,580.49x = 7,471,301.80
  5. Step 5: Solve for x
    x = 7,471,301.80/3,580.49
  6. Step 6: Final answer
    x = 2,086.67

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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.