Home / 1,962.09-2,708.17-1,215.62

Finding the Fourth Proportional to 1,962.09, 2,708.17 and 1,215.62

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Solution

The fourth proportional to 1,962.09, 2,708.17 and 1,215.62 is: 1,677.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.09 : 2,708.17 = 1,215.62 : x
  2. Step 2: Convert to fraction form
    1,962.09/2,708.17 = 1,215.62/x
  3. Step 3: Cross multiply
    1,962.09x = 2,708.17 × 1,215.62
  4. Step 4: Simplify right side
    1,962.09x = 3,292,114.42
  5. Step 5: Solve for x
    x = 3,292,114.42/1,962.09
  6. Step 6: Final answer
    x = 1,677.86

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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.