Home / 7,913.46-11,870.22-2,981.78

Finding the Fourth Proportional to 7,913.46, 11,870.22 and 2,981.78

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Solution

The fourth proportional to 7,913.46, 11,870.22 and 2,981.78 is: 4,472.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.46 : 11,870.22 = 2,981.78 : x
  2. Step 2: Convert to fraction form
    7,913.46/11,870.22 = 2,981.78/x
  3. Step 3: Cross multiply
    7,913.46x = 11,870.22 × 2,981.78
  4. Step 4: Simplify right side
    7,913.46x = 35,394,325.24
  5. Step 5: Solve for x
    x = 35,394,325.24/7,913.46
  6. Step 6: Final answer
    x = 4,472.67

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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.