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Finding the Fourth Proportional to 3,084.16, 4,256.16 and 1,686.91

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Solution

The fourth proportional to 3,084.16, 4,256.16 and 1,686.91 is: 2,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,084.16 : 4,256.16 = 1,686.91 : x
  2. Step 2: Convert to fraction form
    3,084.16/4,256.16 = 1,686.91/x
  3. Step 3: Cross multiply
    3,084.16x = 4,256.16 × 1,686.91
  4. Step 4: Simplify right side
    3,084.16x = 7,179,758.87
  5. Step 5: Solve for x
    x = 7,179,758.87/3,084.16
  6. Step 6: Final answer
    x = 2,327.95

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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.