Home / 7,182.36-9,912.24-4,039.20

Finding the Fourth Proportional to 7,182.36, 9,912.24 and 4,039.20

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Solution

The fourth proportional to 7,182.36, 9,912.24 and 4,039.20 is: 5,574.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.36 : 9,912.24 = 4,039.20 : x
  2. Step 2: Convert to fraction form
    7,182.36/9,912.24 = 4,039.20/x
  3. Step 3: Cross multiply
    7,182.36x = 9,912.24 × 4,039.20
  4. Step 4: Simplify right side
    7,182.36x = 40,037,519.81
  5. Step 5: Solve for x
    x = 40,037,519.81/7,182.36
  6. Step 6: Final answer
    x = 5,574.42

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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.