Home / 1,938.66-2,908.76-706.15

Finding the Fourth Proportional to 1,938.66, 2,908.76 and 706.15

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Solution

The fourth proportional to 1,938.66, 2,908.76 and 706.15 is: 1,059.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.66 : 2,908.76 = 706.15 : x
  2. Step 2: Convert to fraction form
    1,938.66/2,908.76 = 706.15/x
  3. Step 3: Cross multiply
    1,938.66x = 2,908.76 × 706.15
  4. Step 4: Simplify right side
    1,938.66x = 2,054,020.87
  5. Step 5: Solve for x
    x = 2,054,020.87/1,938.66
  6. Step 6: Final answer
    x = 1,059.51

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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.