Home / 4,920.45-7,378.50-1,409.66

Finding the Fourth Proportional to 4,920.45, 7,378.50 and 1,409.66

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Solution

The fourth proportional to 4,920.45, 7,378.50 and 1,409.66 is: 2,113.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.45 : 7,378.50 = 1,409.66 : x
  2. Step 2: Convert to fraction form
    4,920.45/7,378.50 = 1,409.66/x
  3. Step 3: Cross multiply
    4,920.45x = 7,378.50 × 1,409.66
  4. Step 4: Simplify right side
    4,920.45x = 10,401,132.37
  5. Step 5: Solve for x
    x = 10,401,132.37/4,920.45
  6. Step 6: Final answer
    x = 2,113.86

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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.