Home / 7,409.40-11,113.68-2,478.54

Finding the Fourth Proportional to 7,409.40, 11,113.68 and 2,478.54

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Solution

The fourth proportional to 7,409.40, 11,113.68 and 2,478.54 is: 3,717.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,409.40 : 11,113.68 = 2,478.54 : x
  2. Step 2: Convert to fraction form
    7,409.40/11,113.68 = 2,478.54/x
  3. Step 3: Cross multiply
    7,409.40x = 11,113.68 × 2,478.54
  4. Step 4: Simplify right side
    7,409.40x = 27,545,700.43
  5. Step 5: Solve for x
    x = 27,545,700.43/7,409.40
  6. Step 6: Final answer
    x = 3,717.67

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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.