Home / 10,186.46-15,279.71-2,790.99

Finding the Fourth Proportional to 10,186.46, 15,279.71 and 2,790.99

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Solution

The fourth proportional to 10,186.46, 15,279.71 and 2,790.99 is: 4,186.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,186.46 : 15,279.71 = 2,790.99 : x
  2. Step 2: Convert to fraction form
    10,186.46/15,279.71 = 2,790.99/x
  3. Step 3: Cross multiply
    10,186.46x = 15,279.71 × 2,790.99
  4. Step 4: Simplify right side
    10,186.46x = 42,645,517.81
  5. Step 5: Solve for x
    x = 42,645,517.81/10,186.46
  6. Step 6: Final answer
    x = 4,186.49

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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.