Home / 8,379.38-12,561.09-3,113.00

Finding the Fourth Proportional to 8,379.38, 12,561.09 and 3,113.00

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Solution

The fourth proportional to 8,379.38, 12,561.09 and 3,113.00 is: 4,666.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.38 : 12,561.09 = 3,113.00 : x
  2. Step 2: Convert to fraction form
    8,379.38/12,561.09 = 3,113.00/x
  3. Step 3: Cross multiply
    8,379.38x = 12,561.09 × 3,113.00
  4. Step 4: Simplify right side
    8,379.38x = 39,102,610.36
  5. Step 5: Solve for x
    x = 39,102,610.36/8,379.38
  6. Step 6: Final answer
    x = 4,666.53

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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.