Home / 2,084.34-3,126.45-851.40

Finding the Fourth Proportional to 2,084.34, 3,126.45 and 851.40

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Solution

The fourth proportional to 2,084.34, 3,126.45 and 851.40 is: 1,277.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,084.34 : 3,126.45 = 851.40 : x
  2. Step 2: Convert to fraction form
    2,084.34/3,126.45 = 851.40/x
  3. Step 3: Cross multiply
    2,084.34x = 3,126.45 × 851.40
  4. Step 4: Simplify right side
    2,084.34x = 2,661,859.53
  5. Step 5: Solve for x
    x = 2,661,859.53/2,084.34
  6. Step 6: Final answer
    x = 1,277.08

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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.