Home / 1,687.06-2,328.44-1,269.50

Finding the Fourth Proportional to 1,687.06, 2,328.44 and 1,269.50

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Solution

The fourth proportional to 1,687.06, 2,328.44 and 1,269.50 is: 1,752.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.06 : 2,328.44 = 1,269.50 : x
  2. Step 2: Convert to fraction form
    1,687.06/2,328.44 = 1,269.50/x
  3. Step 3: Cross multiply
    1,687.06x = 2,328.44 × 1,269.50
  4. Step 4: Simplify right side
    1,687.06x = 2,955,954.58
  5. Step 5: Solve for x
    x = 2,955,954.58/1,687.06
  6. Step 6: Final answer
    x = 1,752.13

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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.