Home / 8,389.46-12,589.96-3,459.10

Finding the Fourth Proportional to 8,389.46, 12,589.96 and 3,459.10

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Solution

The fourth proportional to 8,389.46, 12,589.96 and 3,459.10 is: 5,191.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.46 : 12,589.96 = 3,459.10 : x
  2. Step 2: Convert to fraction form
    8,389.46/12,589.96 = 3,459.10/x
  3. Step 3: Cross multiply
    8,389.46x = 12,589.96 × 3,459.10
  4. Step 4: Simplify right side
    8,389.46x = 43,549,879.88
  5. Step 5: Solve for x
    x = 43,549,879.88/8,389.46
  6. Step 6: Final answer
    x = 5,191.02

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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.