Home / 3,084.72-4,256.87-1,687.47

Finding the Fourth Proportional to 3,084.72, 4,256.87 and 1,687.47

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Solution

The fourth proportional to 3,084.72, 4,256.87 and 1,687.47 is: 2,328.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,084.72 : 4,256.87 = 1,687.47 : x
  2. Step 2: Convert to fraction form
    3,084.72/4,256.87 = 1,687.47/x
  3. Step 3: Cross multiply
    3,084.72x = 4,256.87 × 1,687.47
  4. Step 4: Simplify right side
    3,084.72x = 7,183,340.42
  5. Step 5: Solve for x
    x = 7,183,340.42/3,084.72
  6. Step 6: Final answer
    x = 2,328.68

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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.