Home / 7,121.46-10,681.35-4,481.18

Finding the Fourth Proportional to 7,121.46, 10,681.35 and 4,481.18

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Solution

The fourth proportional to 7,121.46, 10,681.35 and 4,481.18 is: 6,721.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.46 : 10,681.35 = 4,481.18 : x
  2. Step 2: Convert to fraction form
    7,121.46/10,681.35 = 4,481.18/x
  3. Step 3: Cross multiply
    7,121.46x = 10,681.35 × 4,481.18
  4. Step 4: Simplify right side
    7,121.46x = 47,864,998.59
  5. Step 5: Solve for x
    x = 47,864,998.59/7,121.46
  6. Step 6: Final answer
    x = 6,721.23

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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.