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Finding the Fourth Proportional to 5,458, 8,187 and 1,810

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Solution

The fourth proportional to 5,458, 8,187 and 1,810 is: 2,715

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458 : 8,187 = 1,810 : x
  2. Step 2: Convert to fraction form
    5,458/8,187 = 1,810/x
  3. Step 3: Cross multiply
    5,458x = 8,187 × 1,810
  4. Step 4: Simplify right side
    5,458x = 14,818,470
  5. Step 5: Solve for x
    x = 14,818,470/5,458
  6. Step 6: Final answer
    x = 2,715

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.