Home / 7,618.38-10,489.99-6,668.85

Finding the Fourth Proportional to 7,618.38, 10,489.99 and 6,668.85

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Solution

The fourth proportional to 7,618.38, 10,489.99 and 6,668.85 is: 9,182.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,618.38 : 10,489.99 = 6,668.85 : x
  2. Step 2: Convert to fraction form
    7,618.38/10,489.99 = 6,668.85/x
  3. Step 3: Cross multiply
    7,618.38x = 10,489.99 × 6,668.85
  4. Step 4: Simplify right side
    7,618.38x = 69,956,192.48
  5. Step 5: Solve for x
    x = 69,956,192.48/7,618.38
  6. Step 6: Final answer
    x = 9,182.56

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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.