Home / 2,146.80-2,962.92-1,308.36

Finding the Fourth Proportional to 2,146.80, 2,962.92 and 1,308.36

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Solution

The fourth proportional to 2,146.80, 2,962.92 and 1,308.36 is: 1,805.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.80 : 2,962.92 = 1,308.36 : x
  2. Step 2: Convert to fraction form
    2,146.80/2,962.92 = 1,308.36/x
  3. Step 3: Cross multiply
    2,146.80x = 2,962.92 × 1,308.36
  4. Step 4: Simplify right side
    2,146.80x = 3,876,566.01
  5. Step 5: Solve for x
    x = 3,876,566.01/2,146.80
  6. Step 6: Final answer
    x = 1,805.74

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1.5x scale

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.