Home / 3,886.08-5,361.84-2,490.72

Finding the Fourth Proportional to 3,886.08, 5,361.84 and 2,490.72

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Solution

The fourth proportional to 3,886.08, 5,361.84 and 2,490.72 is: 3,436.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.08 : 5,361.84 = 2,490.72 : x
  2. Step 2: Convert to fraction form
    3,886.08/5,361.84 = 2,490.72/x
  3. Step 3: Cross multiply
    3,886.08x = 5,361.84 × 2,490.72
  4. Step 4: Simplify right side
    3,886.08x = 13,354,842.12
  5. Step 5: Solve for x
    x = 13,354,842.12/3,886.08
  6. Step 6: Final answer
    x = 3,436.58

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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.