Home / 7,121.04-10,680.71-1,927.32

Finding the Fourth Proportional to 7,121.04, 10,680.71 and 1,927.32

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Solution

The fourth proportional to 7,121.04, 10,680.71 and 1,927.32 is: 2,890.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.04 : 10,680.71 = 1,927.32 : x
  2. Step 2: Convert to fraction form
    7,121.04/10,680.71 = 1,927.32/x
  3. Step 3: Cross multiply
    7,121.04x = 10,680.71 × 1,927.32
  4. Step 4: Simplify right side
    7,121.04x = 20,585,146.00
  5. Step 5: Solve for x
    x = 20,585,146.00/7,121.04
  6. Step 6: Final answer
    x = 2,890.75

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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.