Home / 2,160.06-2,980.60-1,215.73

Finding the Fourth Proportional to 2,160.06, 2,980.60 and 1,215.73

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Solution

The fourth proportional to 2,160.06, 2,980.60 and 1,215.73 is: 1,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.06 : 2,980.60 = 1,215.73 : x
  2. Step 2: Convert to fraction form
    2,160.06/2,980.60 = 1,215.73/x
  3. Step 3: Cross multiply
    2,160.06x = 2,980.60 × 1,215.73
  4. Step 4: Simplify right side
    2,160.06x = 3,623,604.84
  5. Step 5: Solve for x
    x = 3,623,604.84/2,160.06
  6. Step 6: Final answer
    x = 1,677.55

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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.