Home / 3,084.68-4,256.98-1,687.40

Finding the Fourth Proportional to 3,084.68, 4,256.98 and 1,687.40

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Solution

The fourth proportional to 3,084.68, 4,256.98 and 1,687.40 is: 2,328.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,084.68 : 4,256.98 = 1,687.40 : x
  2. Step 2: Convert to fraction form
    3,084.68/4,256.98 = 1,687.40/x
  3. Step 3: Cross multiply
    3,084.68x = 4,256.98 × 1,687.40
  4. Step 4: Simplify right side
    3,084.68x = 7,183,228.05
  5. Step 5: Solve for x
    x = 7,183,228.05/3,084.68
  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.