Home / 8,621.21-12,921.37-6,118.46

Finding the Fourth Proportional to 8,621.21, 12,921.37 and 6,118.46

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Solution

The fourth proportional to 8,621.21, 12,921.37 and 6,118.46 is: 9,170.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.21 : 12,921.37 = 6,118.46 : x
  2. Step 2: Convert to fraction form
    8,621.21/12,921.37 = 6,118.46/x
  3. Step 3: Cross multiply
    8,621.21x = 12,921.37 × 6,118.46
  4. Step 4: Simplify right side
    8,621.21x = 79,058,790.29
  5. Step 5: Solve for x
    x = 79,058,790.29/8,621.21
  6. Step 6: Final answer
    x = 9,170.27

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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.