Home / 7,121.85-10,680.73-2,956.69

Finding the Fourth Proportional to 7,121.85, 10,680.73 and 2,956.69

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Solution

The fourth proportional to 7,121.85, 10,680.73 and 2,956.69 is: 4,434.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.85 : 10,680.73 = 2,956.69 : x
  2. Step 2: Convert to fraction form
    7,121.85/10,680.73 = 2,956.69/x
  3. Step 3: Cross multiply
    7,121.85x = 10,680.73 × 2,956.69
  4. Step 4: Simplify right side
    7,121.85x = 31,579,607.58
  5. Step 5: Solve for x
    x = 31,579,607.58/7,121.85
  6. Step 6: Final answer
    x = 4,434.19

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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.