Home / 1,585.44-2,185.92-1,306.80

Finding the Fourth Proportional to 1,585.44, 2,185.92 and 1,306.80

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Solution

The fourth proportional to 1,585.44, 2,185.92 and 1,306.80 is: 1,801.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.44 : 2,185.92 = 1,306.80 : x
  2. Step 2: Convert to fraction form
    1,585.44/2,185.92 = 1,306.80/x
  3. Step 3: Cross multiply
    1,585.44x = 2,185.92 × 1,306.80
  4. Step 4: Simplify right side
    1,585.44x = 2,856,560.26
  5. Step 5: Solve for x
    x = 2,856,560.26/1,585.44
  6. Step 6: Final answer
    x = 1,801.75

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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.