Home / 2,585.25-3,878.64-1,490.40

Finding the Fourth Proportional to 2,585.25, 3,878.64 and 1,490.40

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Solution

The fourth proportional to 2,585.25, 3,878.64 and 1,490.40 is: 2,236.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.25 : 3,878.64 = 1,490.40 : x
  2. Step 2: Convert to fraction form
    2,585.25/3,878.64 = 1,490.40/x
  3. Step 3: Cross multiply
    2,585.25x = 3,878.64 × 1,490.40
  4. Step 4: Simplify right side
    2,585.25x = 5,780,725.06
  5. Step 5: Solve for x
    x = 5,780,725.06/2,585.25
  6. Step 6: Final answer
    x = 2,236.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.