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Finding the Fourth Proportional to 2,679.86, 4,021.14 and 1,511.16

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Solution

The fourth proportional to 2,679.86, 4,021.14 and 1,511.16 is: 2,267.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.86 : 4,021.14 = 1,511.16 : x
  2. Step 2: Convert to fraction form
    2,679.86/4,021.14 = 1,511.16/x
  3. Step 3: Cross multiply
    2,679.86x = 4,021.14 × 1,511.16
  4. Step 4: Simplify right side
    2,679.86x = 6,076,585.92
  5. Step 5: Solve for x
    x = 6,076,585.92/2,679.86
  6. Step 6: Final answer
    x = 2,267.51

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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.