Home / 7,477.99-10,324.05-6,647.69

Finding the Fourth Proportional to 7,477.99, 10,324.05 and 6,647.69

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Solution

The fourth proportional to 7,477.99, 10,324.05 and 6,647.69 is: 9,177.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.99 : 10,324.05 = 6,647.69 : x
  2. Step 2: Convert to fraction form
    7,477.99/10,324.05 = 6,647.69/x
  3. Step 3: Cross multiply
    7,477.99x = 10,324.05 × 6,647.69
  4. Step 4: Simplify right side
    7,477.99x = 68,631,109.75
  5. Step 5: Solve for x
    x = 68,631,109.75/7,477.99
  6. Step 6: Final answer
    x = 9,177.75

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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.