Home / 7,183.40-9,912.96-4,039.28

Finding the Fourth Proportional to 7,183.40, 9,912.96 and 4,039.28

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Solution

The fourth proportional to 7,183.40, 9,912.96 and 4,039.28 is: 5,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,183.40 : 9,912.96 = 4,039.28 : x
  2. Step 2: Convert to fraction form
    7,183.40/9,912.96 = 4,039.28/x
  3. Step 3: Cross multiply
    7,183.40x = 9,912.96 × 4,039.28
  4. Step 4: Simplify right side
    7,183.40x = 40,041,221.07
  5. Step 5: Solve for x
    x = 40,041,221.07/7,183.40
  6. Step 6: Final answer
    x = 5,574.13

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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.