Home / 2,810.52-3,878.31-1,631.40

Finding the Fourth Proportional to 2,810.52, 3,878.31 and 1,631.40

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Solution

The fourth proportional to 2,810.52, 3,878.31 and 1,631.40 is: 2,251.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.52 : 3,878.31 = 1,631.40 : x
  2. Step 2: Convert to fraction form
    2,810.52/3,878.31 = 1,631.40/x
  3. Step 3: Cross multiply
    2,810.52x = 3,878.31 × 1,631.40
  4. Step 4: Simplify right side
    2,810.52x = 6,327,074.93
  5. Step 5: Solve for x
    x = 6,327,074.93/2,810.52
  6. Step 6: Final answer
    x = 2,251.21

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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.