Home / 3,118.23-4,678.32-926.97

Finding the Fourth Proportional to 3,118.23, 4,678.32 and 926.97

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Solution

The fourth proportional to 3,118.23, 4,678.32 and 926.97 is: 1,390.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.23 : 4,678.32 = 926.97 : x
  2. Step 2: Convert to fraction form
    3,118.23/4,678.32 = 926.97/x
  3. Step 3: Cross multiply
    3,118.23x = 4,678.32 × 926.97
  4. Step 4: Simplify right side
    3,118.23x = 4,336,662.29
  5. Step 5: Solve for x
    x = 4,336,662.29/3,118.23
  6. Step 6: Final answer
    x = 1,390.74

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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.