Home / 2,986.17-4,120.88-1,659.80

Finding the Fourth Proportional to 2,986.17, 4,120.88 and 1,659.80

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Solution

The fourth proportional to 2,986.17, 4,120.88 and 1,659.80 is: 2,290.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.17 : 4,120.88 = 1,659.80 : x
  2. Step 2: Convert to fraction form
    2,986.17/4,120.88 = 1,659.80/x
  3. Step 3: Cross multiply
    2,986.17x = 4,120.88 × 1,659.80
  4. Step 4: Simplify right side
    2,986.17x = 6,839,807.72
  5. Step 5: Solve for x
    x = 6,839,807.72/2,986.17
  6. Step 6: Final answer
    x = 2,290.50

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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.