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Finding the Fourth Proportional to 1,891.29, 2,610 and 1,051.95

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Solution

The fourth proportional to 1,891.29, 2,610 and 1,051.95 is: 1,451.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.29 : 2,610 = 1,051.95 : x
  2. Step 2: Convert to fraction form
    1,891.29/2,610 = 1,051.95/x
  3. Step 3: Cross multiply
    1,891.29x = 2,610 × 1,051.95
  4. Step 4: Simplify right side
    1,891.29x = 2,745,589.50
  5. Step 5: Solve for x
    x = 2,745,589.50/1,891.29
  6. Step 6: Final answer
    x = 1,451.70

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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.