Home / 1,947.08-2,687-1,200.61

Finding the Fourth Proportional to 1,947.08, 2,687 and 1,200.61

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Solution

The fourth proportional to 1,947.08, 2,687 and 1,200.61 is: 1,656.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.08 : 2,687 = 1,200.61 : x
  2. Step 2: Convert to fraction form
    1,947.08/2,687 = 1,200.61/x
  3. Step 3: Cross multiply
    1,947.08x = 2,687 × 1,200.61
  4. Step 4: Simplify right side
    1,947.08x = 3,226,039.07
  5. Step 5: Solve for x
    x = 3,226,039.07/1,947.08
  6. Step 6: Final answer
    x = 1,656.86

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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.