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Finding the Fourth Proportional to 2,810.63, 3,878.82 and 1,551.69

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Solution

The fourth proportional to 2,810.63, 3,878.82 and 1,551.69 is: 2,141.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.63 : 3,878.82 = 1,551.69 : x
  2. Step 2: Convert to fraction form
    2,810.63/3,878.82 = 1,551.69/x
  3. Step 3: Cross multiply
    2,810.63x = 3,878.82 × 1,551.69
  4. Step 4: Simplify right side
    2,810.63x = 6,018,726.21
  5. Step 5: Solve for x
    x = 6,018,726.21/2,810.63
  6. Step 6: Final answer
    x = 2,141.41

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1.5x scale

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.