Home / 8,123.09-12,187.73-2,858.64

Finding the Fourth Proportional to 8,123.09, 12,187.73 and 2,858.64

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Solution

The fourth proportional to 8,123.09, 12,187.73 and 2,858.64 is: 4,289.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.09 : 12,187.73 = 2,858.64 : x
  2. Step 2: Convert to fraction form
    8,123.09/12,187.73 = 2,858.64/x
  3. Step 3: Cross multiply
    8,123.09x = 12,187.73 × 2,858.64
  4. Step 4: Simplify right side
    8,123.09x = 34,840,318.19
  5. Step 5: Solve for x
    x = 34,840,318.19/8,123.09
  6. Step 6: Final answer
    x = 4,289.05

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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.