Home / 2,810.16-3,878.28-1,631.61

Finding the Fourth Proportional to 2,810.16, 3,878.28 and 1,631.61

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Solution

The fourth proportional to 2,810.16, 3,878.28 and 1,631.61 is: 2,251.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.16 : 3,878.28 = 1,631.61 : x
  2. Step 2: Convert to fraction form
    2,810.16/3,878.28 = 1,631.61/x
  3. Step 3: Cross multiply
    2,810.16x = 3,878.28 × 1,631.61
  4. Step 4: Simplify right side
    2,810.16x = 6,327,840.43
  5. Step 5: Solve for x
    x = 6,327,840.43/2,810.16
  6. Step 6: Final answer
    x = 2,251.77

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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.