Home / 7,768.36-10,720.24-4,231.56

Finding the Fourth Proportional to 7,768.36, 10,720.24 and 4,231.56

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Solution

The fourth proportional to 7,768.36, 10,720.24 and 4,231.56 is: 5,839.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.36 : 10,720.24 = 4,231.56 : x
  2. Step 2: Convert to fraction form
    7,768.36/10,720.24 = 4,231.56/x
  3. Step 3: Cross multiply
    7,768.36x = 10,720.24 × 4,231.56
  4. Step 4: Simplify right side
    7,768.36x = 45,363,338.77
  5. Step 5: Solve for x
    x = 45,363,338.77/7,768.36
  6. Step 6: Final answer
    x = 5,839.50

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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.