Home / 3,888.65-5,364.81-2,186.77

Finding the Fourth Proportional to 3,888.65, 5,364.81 and 2,186.77

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Solution

The fourth proportional to 3,888.65, 5,364.81 and 2,186.77 is: 3,016.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.65 : 5,364.81 = 2,186.77 : x
  2. Step 2: Convert to fraction form
    3,888.65/5,364.81 = 2,186.77/x
  3. Step 3: Cross multiply
    3,888.65x = 5,364.81 × 2,186.77
  4. Step 4: Simplify right side
    3,888.65x = 11,731,624.99
  5. Step 5: Solve for x
    x = 11,731,624.99/3,888.65
  6. Step 6: Final answer
    x = 3,016.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.