Home / 8,918.34-13,382.98-3,992.15

Finding the Fourth Proportional to 8,918.34, 13,382.98 and 3,992.15

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Solution

The fourth proportional to 8,918.34, 13,382.98 and 3,992.15 is: 5,990.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.34 : 13,382.98 = 3,992.15 : x
  2. Step 2: Convert to fraction form
    8,918.34/13,382.98 = 3,992.15/x
  3. Step 3: Cross multiply
    8,918.34x = 13,382.98 × 3,992.15
  4. Step 4: Simplify right side
    8,918.34x = 53,426,776.73
  5. Step 5: Solve for x
    x = 53,426,776.73/8,918.34
  6. Step 6: Final answer
    x = 5,990.66

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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.