Home / 2,084.13-3,126.80-623.40

Finding the Fourth Proportional to 2,084.13, 3,126.80 and 623.40

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Solution

The fourth proportional to 2,084.13, 3,126.80 and 623.40 is: 935.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,084.13 : 3,126.80 = 623.40 : x
  2. Step 2: Convert to fraction form
    2,084.13/3,126.80 = 623.40/x
  3. Step 3: Cross multiply
    2,084.13x = 3,126.80 × 623.40
  4. Step 4: Simplify right side
    2,084.13x = 1,949,236.95
  5. Step 5: Solve for x
    x = 1,949,236.95/2,084.13
  6. Step 6: Final answer
    x = 935.28

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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.