Home / 2,084.22-3,126.27-678.63

Finding the Fourth Proportional to 2,084.22, 3,126.27 and 678.63

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Solution

The fourth proportional to 2,084.22, 3,126.27 and 678.63 is: 1,017.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,084.22 : 3,126.27 = 678.63 : x
  2. Step 2: Convert to fraction form
    2,084.22/3,126.27 = 678.63/x
  3. Step 3: Cross multiply
    2,084.22x = 3,126.27 × 678.63
  4. Step 4: Simplify right side
    2,084.22x = 2,121,580.61
  5. Step 5: Solve for x
    x = 2,121,580.61/2,084.22
  6. Step 6: Final answer
    x = 1,017.93

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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.