Home / 1,962.95-2,708.85-1,078.80

Finding the Fourth Proportional to 1,962.95, 2,708.85 and 1,078.80

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Solution

The fourth proportional to 1,962.95, 2,708.85 and 1,078.80 is: 1,488.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.95 : 2,708.85 = 1,078.80 : x
  2. Step 2: Convert to fraction form
    1,962.95/2,708.85 = 1,078.80/x
  3. Step 3: Cross multiply
    1,962.95x = 2,708.85 × 1,078.80
  4. Step 4: Simplify right side
    1,962.95x = 2,922,307.38
  5. Step 5: Solve for x
    x = 2,922,307.38/1,962.95
  6. Step 6: Final answer
    x = 1,488.74

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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.