Home / 3,085.02-4,257.39-1,687.86

Finding the Fourth Proportional to 3,085.02, 4,257.39 and 1,687.86

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Solution

The fourth proportional to 3,085.02, 4,257.39 and 1,687.86 is: 2,329.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.02 : 4,257.39 = 1,687.86 : x
  2. Step 2: Convert to fraction form
    3,085.02/4,257.39 = 1,687.86/x
  3. Step 3: Cross multiply
    3,085.02x = 4,257.39 × 1,687.86
  4. Step 4: Simplify right side
    3,085.02x = 7,185,878.29
  5. Step 5: Solve for x
    x = 7,185,878.29/3,085.02
  6. Step 6: Final answer
    x = 2,329.28

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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.