Home / 2,810.40-3,878.67-1,631.58

Finding the Fourth Proportional to 2,810.40, 3,878.67 and 1,631.58

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Solution

The fourth proportional to 2,810.40, 3,878.67 and 1,631.58 is: 2,251.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.40 : 3,878.67 = 1,631.58 : x
  2. Step 2: Convert to fraction form
    2,810.40/3,878.67 = 1,631.58/x
  3. Step 3: Cross multiply
    2,810.40x = 3,878.67 × 1,631.58
  4. Step 4: Simplify right side
    2,810.40x = 6,328,360.40
  5. Step 5: Solve for x
    x = 6,328,360.40/2,810.40
  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.