Home / 7,668.40-11,502.82-2,121.79

Finding the Fourth Proportional to 7,668.40, 11,502.82 and 2,121.79

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Solution

The fourth proportional to 7,668.40, 11,502.82 and 2,121.79 is: 3,182.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,668.40 : 11,502.82 = 2,121.79 : x
  2. Step 2: Convert to fraction form
    7,668.40/11,502.82 = 2,121.79/x
  3. Step 3: Cross multiply
    7,668.40x = 11,502.82 × 2,121.79
  4. Step 4: Simplify right side
    7,668.40x = 24,406,500.32
  5. Step 5: Solve for x
    x = 24,406,500.32/7,668.40
  6. Step 6: Final answer
    x = 3,182.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.