Home / 4,378.72-6,042.78-2,389.39

Finding the Fourth Proportional to 4,378.72, 6,042.78 and 2,389.39

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Solution

The fourth proportional to 4,378.72, 6,042.78 and 2,389.39 is: 3,297.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,378.72 : 6,042.78 = 2,389.39 : x
  2. Step 2: Convert to fraction form
    4,378.72/6,042.78 = 2,389.39/x
  3. Step 3: Cross multiply
    4,378.72x = 6,042.78 × 2,389.39
  4. Step 4: Simplify right side
    4,378.72x = 14,438,545.49
  5. Step 5: Solve for x
    x = 14,438,545.49/4,378.72
  6. Step 6: Final answer
    x = 3,297.43

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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.