Home / 8,682.25-13,015.35-3,420.12

Finding the Fourth Proportional to 8,682.25, 13,015.35 and 3,420.12

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Solution

The fourth proportional to 8,682.25, 13,015.35 and 3,420.12 is: 5,127.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.25 : 13,015.35 = 3,420.12 : x
  2. Step 2: Convert to fraction form
    8,682.25/13,015.35 = 3,420.12/x
  3. Step 3: Cross multiply
    8,682.25x = 13,015.35 × 3,420.12
  4. Step 4: Simplify right side
    8,682.25x = 44,514,058.84
  5. Step 5: Solve for x
    x = 44,514,058.84/8,682.25
  6. Step 6: Final answer
    x = 5,127.02

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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.