Home / 7,019.12-9,685.56-4,186.65

Finding the Fourth Proportional to 7,019.12, 9,685.56 and 4,186.65

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Solution

The fourth proportional to 7,019.12, 9,685.56 and 4,186.65 is: 5,777.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.12 : 9,685.56 = 4,186.65 : x
  2. Step 2: Convert to fraction form
    7,019.12/9,685.56 = 4,186.65/x
  3. Step 3: Cross multiply
    7,019.12x = 9,685.56 × 4,186.65
  4. Step 4: Simplify right side
    7,019.12x = 40,550,049.77
  5. Step 5: Solve for x
    x = 40,550,049.77/7,019.12
  6. Step 6: Final answer
    x = 5,777.09

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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.