Home / 7,121.08-10,681.60-3,960.52

Finding the Fourth Proportional to 7,121.08, 10,681.60 and 3,960.52

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Solution

The fourth proportional to 7,121.08, 10,681.60 and 3,960.52 is: 5,940.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.08 : 10,681.60 = 3,960.52 : x
  2. Step 2: Convert to fraction form
    7,121.08/10,681.60 = 3,960.52/x
  3. Step 3: Cross multiply
    7,121.08x = 10,681.60 × 3,960.52
  4. Step 4: Simplify right side
    7,121.08x = 42,304,690.43
  5. Step 5: Solve for x
    x = 42,304,690.43/7,121.08
  6. Step 6: Final answer
    x = 5,940.77

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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.