Home / 7,084.07-9,776.01-3,940.87

Finding the Fourth Proportional to 7,084.07, 9,776.01 and 3,940.87

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Solution

The fourth proportional to 7,084.07, 9,776.01 and 3,940.87 is: 5,438.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,084.07 : 9,776.01 = 3,940.87 : x
  2. Step 2: Convert to fraction form
    7,084.07/9,776.01 = 3,940.87/x
  3. Step 3: Cross multiply
    7,084.07x = 9,776.01 × 3,940.87
  4. Step 4: Simplify right side
    7,084.07x = 38,525,935.65
  5. Step 5: Solve for x
    x = 38,525,935.65/7,084.07
  6. Step 6: Final answer
    x = 5,438.39

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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.