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Finding the Fourth Proportional to 2,806.54, 4,210.13 and 2,290.93

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Solution

The fourth proportional to 2,806.54, 4,210.13 and 2,290.93 is: 3,436.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.54 : 4,210.13 = 2,290.93 : x
  2. Step 2: Convert to fraction form
    2,806.54/4,210.13 = 2,290.93/x
  3. Step 3: Cross multiply
    2,806.54x = 4,210.13 × 2,290.93
  4. Step 4: Simplify right side
    2,806.54x = 9,645,101.67
  5. Step 5: Solve for x
    x = 9,645,101.67/2,806.54
  6. Step 6: Final answer
    x = 3,436.65

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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.