Home / 1,962.60-2,708.28-1,078.25

Finding the Fourth Proportional to 1,962.60, 2,708.28 and 1,078.25

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Solution

The fourth proportional to 1,962.60, 2,708.28 and 1,078.25 is: 1,487.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.60 : 2,708.28 = 1,078.25 : x
  2. Step 2: Convert to fraction form
    1,962.60/2,708.28 = 1,078.25/x
  3. Step 3: Cross multiply
    1,962.60x = 2,708.28 × 1,078.25
  4. Step 4: Simplify right side
    1,962.60x = 2,920,189.37
  5. Step 5: Solve for x
    x = 2,920,189.37/1,962.60
  6. Step 6: Final answer
    x = 1,487.92

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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.