Home / 2,160.80-2,986.08-1,635.92

Finding the Fourth Proportional to 2,160.80, 2,986.08 and 1,635.92

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Solution

The fourth proportional to 2,160.80, 2,986.08 and 1,635.92 is: 2,260.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.80 : 2,986.08 = 1,635.92 : x
  2. Step 2: Convert to fraction form
    2,160.80/2,986.08 = 1,635.92/x
  3. Step 3: Cross multiply
    2,160.80x = 2,986.08 × 1,635.92
  4. Step 4: Simplify right side
    2,160.80x = 4,884,987.99
  5. Step 5: Solve for x
    x = 4,884,987.99/2,160.80
  6. Step 6: Final answer
    x = 2,260.73

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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.