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Finding the Fourth Proportional to 2,810.87, 3,878.98 and 1,551.98

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Solution

The fourth proportional to 2,810.87, 3,878.98 and 1,551.98 is: 2,141.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.87 : 3,878.98 = 1,551.98 : x
  2. Step 2: Convert to fraction form
    2,810.87/3,878.98 = 1,551.98/x
  3. Step 3: Cross multiply
    2,810.87x = 3,878.98 × 1,551.98
  4. Step 4: Simplify right side
    2,810.87x = 6,020,105.20
  5. Step 5: Solve for x
    x = 6,020,105.20/2,810.87
  6. Step 6: Final answer
    x = 2,141.72

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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.