Home / 1,947.50-2,686.44-1,201.32

Finding the Fourth Proportional to 1,947.50, 2,686.44 and 1,201.32

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Solution

The fourth proportional to 1,947.50, 2,686.44 and 1,201.32 is: 1,657.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.50 : 2,686.44 = 1,201.32 : x
  2. Step 2: Convert to fraction form
    1,947.50/2,686.44 = 1,201.32/x
  3. Step 3: Cross multiply
    1,947.50x = 2,686.44 × 1,201.32
  4. Step 4: Simplify right side
    1,947.50x = 3,227,274.10
  5. Step 5: Solve for x
    x = 3,227,274.10/1,947.50
  6. Step 6: Final answer
    x = 1,657.14

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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.