Home / 4,621.91-6,378.89-2,942.78

Finding the Fourth Proportional to 4,621.91, 6,378.89 and 2,942.78

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Solution

The fourth proportional to 4,621.91, 6,378.89 and 2,942.78 is: 4,061.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,621.91 : 6,378.89 = 2,942.78 : x
  2. Step 2: Convert to fraction form
    4,621.91/6,378.89 = 2,942.78/x
  3. Step 3: Cross multiply
    4,621.91x = 6,378.89 × 2,942.78
  4. Step 4: Simplify right side
    4,621.91x = 18,771,623.31
  5. Step 5: Solve for x
    x = 18,771,623.31/4,621.91
  6. Step 6: Final answer
    x = 4,061.45

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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.