Home / 8,879.49-13,314.57-2,638.64

Finding the Fourth Proportional to 8,879.49, 13,314.57 and 2,638.64

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Solution

The fourth proportional to 8,879.49, 13,314.57 and 2,638.64 is: 3,956.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.49 : 13,314.57 = 2,638.64 : x
  2. Step 2: Convert to fraction form
    8,879.49/13,314.57 = 2,638.64/x
  3. Step 3: Cross multiply
    8,879.49x = 13,314.57 × 2,638.64
  4. Step 4: Simplify right side
    8,879.49x = 35,132,290.41
  5. Step 5: Solve for x
    x = 35,132,290.41/8,879.49
  6. Step 6: Final answer
    x = 3,956.57

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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.