Home / 8,405.09-12,607.70-2,859.69

Finding the Fourth Proportional to 8,405.09, 12,607.70 and 2,859.69

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Solution

The fourth proportional to 8,405.09, 12,607.70 and 2,859.69 is: 4,289.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,405.09 : 12,607.70 = 2,859.69 : x
  2. Step 2: Convert to fraction form
    8,405.09/12,607.70 = 2,859.69/x
  3. Step 3: Cross multiply
    8,405.09x = 12,607.70 × 2,859.69
  4. Step 4: Simplify right side
    8,405.09x = 36,054,099.31
  5. Step 5: Solve for x
    x = 36,054,099.31/8,405.09
  6. Step 6: Final answer
    x = 4,289.56

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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.