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Finding the Fourth Proportional to 9,210.84, 13,804.68 and 3,939.65

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Solution

The fourth proportional to 9,210.84, 13,804.68 and 3,939.65 is: 5,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,210.84 : 13,804.68 = 3,939.65 : x
  2. Step 2: Convert to fraction form
    9,210.84/13,804.68 = 3,939.65/x
  3. Step 3: Cross multiply
    9,210.84x = 13,804.68 × 3,939.65
  4. Step 4: Simplify right side
    9,210.84x = 54,385,538.54
  5. Step 5: Solve for x
    x = 54,385,538.54/9,210.84
  6. Step 6: Final answer
    x = 5,904.52

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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.