Home / 8,518.21-12,779.43-2,971.63

Finding the Fourth Proportional to 8,518.21, 12,779.43 and 2,971.63

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Solution

The fourth proportional to 8,518.21, 12,779.43 and 2,971.63 is: 4,458.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.21 : 12,779.43 = 2,971.63 : x
  2. Step 2: Convert to fraction form
    8,518.21/12,779.43 = 2,971.63/x
  3. Step 3: Cross multiply
    8,518.21x = 12,779.43 × 2,971.63
  4. Step 4: Simplify right side
    8,518.21x = 37,975,705.62
  5. Step 5: Solve for x
    x = 37,975,705.62/8,518.21
  6. Step 6: Final answer
    x = 4,458.18

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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.