Home / 1,687.10-2,529.70-1,296.13

Finding the Fourth Proportional to 1,687.10, 2,529.70 and 1,296.13

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Solution

The fourth proportional to 1,687.10, 2,529.70 and 1,296.13 is: 1,943.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.10 : 2,529.70 = 1,296.13 : x
  2. Step 2: Convert to fraction form
    1,687.10/2,529.70 = 1,296.13/x
  3. Step 3: Cross multiply
    1,687.10x = 2,529.70 × 1,296.13
  4. Step 4: Simplify right side
    1,687.10x = 3,278,820.06
  5. Step 5: Solve for x
    x = 3,278,820.06/1,687.10
  6. Step 6: Final answer
    x = 1,943.47

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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.