Home / 7,914.78-10,922.49-4,378.14

Finding the Fourth Proportional to 7,914.78, 10,922.49 and 4,378.14

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Solution

The fourth proportional to 7,914.78, 10,922.49 and 4,378.14 is: 6,041.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,914.78 : 10,922.49 = 4,378.14 : x
  2. Step 2: Convert to fraction form
    7,914.78/10,922.49 = 4,378.14/x
  3. Step 3: Cross multiply
    7,914.78x = 10,922.49 × 4,378.14
  4. Step 4: Simplify right side
    7,914.78x = 47,820,190.37
  5. Step 5: Solve for x
    x = 47,820,190.37/7,914.78
  6. Step 6: Final answer
    x = 6,041.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.