Home / 3,151.78-4,726.80-1,668.99

Finding the Fourth Proportional to 3,151.78, 4,726.80 and 1,668.99

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Solution

The fourth proportional to 3,151.78, 4,726.80 and 1,668.99 is: 2,503.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.78 : 4,726.80 = 1,668.99 : x
  2. Step 2: Convert to fraction form
    3,151.78/4,726.80 = 1,668.99/x
  3. Step 3: Cross multiply
    3,151.78x = 4,726.80 × 1,668.99
  4. Step 4: Simplify right side
    3,151.78x = 7,888,981.93
  5. Step 5: Solve for x
    x = 7,888,981.93/3,151.78
  6. Step 6: Final answer
    x = 2,503.02

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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.