Home / 1,962.89-2,708.74-1,078.70

Finding the Fourth Proportional to 1,962.89, 2,708.74 and 1,078.70

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Solution

The fourth proportional to 1,962.89, 2,708.74 and 1,078.70 is: 1,488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.89 : 2,708.74 = 1,078.70 : x
  2. Step 2: Convert to fraction form
    1,962.89/2,708.74 = 1,078.70/x
  3. Step 3: Cross multiply
    1,962.89x = 2,708.74 × 1,078.70
  4. Step 4: Simplify right side
    1,962.89x = 2,921,898.90
  5. Step 5: Solve for x
    x = 2,921,898.90/1,962.89
  6. Step 6: Final answer
    x = 1,488.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.