Home / 2,146.88-2,962.70-1,215.38

Finding the Fourth Proportional to 2,146.88, 2,962.70 and 1,215.38

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Solution

The fourth proportional to 2,146.88, 2,962.70 and 1,215.38 is: 1,677.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.88 : 2,962.70 = 1,215.38 : x
  2. Step 2: Convert to fraction form
    2,146.88/2,962.70 = 1,215.38/x
  3. Step 3: Cross multiply
    2,146.88x = 2,962.70 × 1,215.38
  4. Step 4: Simplify right side
    2,146.88x = 3,600,785.44
  5. Step 5: Solve for x
    x = 3,600,785.44/2,146.88
  6. Step 6: Final answer
    x = 1,677.22

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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.