Home / 2,585.40-3,878.60-1,025.10

Finding the Fourth Proportional to 2,585.40, 3,878.60 and 1,025.10

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Solution

The fourth proportional to 2,585.40, 3,878.60 and 1,025.10 is: 1,537.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.40 : 3,878.60 = 1,025.10 : x
  2. Step 2: Convert to fraction form
    2,585.40/3,878.60 = 1,025.10/x
  3. Step 3: Cross multiply
    2,585.40x = 3,878.60 × 1,025.10
  4. Step 4: Simplify right side
    2,585.40x = 3,975,952.86
  5. Step 5: Solve for x
    x = 3,975,952.86/2,585.40
  6. Step 6: Final answer
    x = 1,537.85

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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.