Home / 2,810.46-3,878.78-1,691.98

Finding the Fourth Proportional to 2,810.46, 3,878.78 and 1,691.98

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Solution

The fourth proportional to 2,810.46, 3,878.78 and 1,691.98 is: 2,335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.46 : 3,878.78 = 1,691.98 : x
  2. Step 2: Convert to fraction form
    2,810.46/3,878.78 = 1,691.98/x
  3. Step 3: Cross multiply
    2,810.46x = 3,878.78 × 1,691.98
  4. Step 4: Simplify right side
    2,810.46x = 6,562,818.18
  5. Step 5: Solve for x
    x = 6,562,818.18/2,810.46
  6. Step 6: Final answer
    x = 2,335.14

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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.