Home / 8,405.22-12,607.83-2,561.78

Finding the Fourth Proportional to 8,405.22, 12,607.83 and 2,561.78

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Solution

The fourth proportional to 8,405.22, 12,607.83 and 2,561.78 is: 3,842.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.22 : 12,607.83 = 2,561.78 : x
  2. Step 2: Convert to fraction form
    8,405.22/12,607.83 = 2,561.78/x
  3. Step 3: Cross multiply
    8,405.22x = 12,607.83 × 2,561.78
  4. Step 4: Simplify right side
    8,405.22x = 32,298,486.74
  5. Step 5: Solve for x
    x = 32,298,486.74/8,405.22
  6. Step 6: Final answer
    x = 3,842.67

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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.