Home / 7,278.42-10,920.06-2,894.70

Finding the Fourth Proportional to 7,278.42, 10,920.06 and 2,894.70

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Solution

The fourth proportional to 7,278.42, 10,920.06 and 2,894.70 is: 4,343.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.42 : 10,920.06 = 2,894.70 : x
  2. Step 2: Convert to fraction form
    7,278.42/10,920.06 = 2,894.70/x
  3. Step 3: Cross multiply
    7,278.42x = 10,920.06 × 2,894.70
  4. Step 4: Simplify right side
    7,278.42x = 31,610,297.68
  5. Step 5: Solve for x
    x = 31,610,297.68/7,278.42
  6. Step 6: Final answer
    x = 4,343.02

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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.