Home / 1,959.15-2,705.28-1,431.03

Finding the Fourth Proportional to 1,959.15, 2,705.28 and 1,431.03

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Solution

The fourth proportional to 1,959.15, 2,705.28 and 1,431.03 is: 1,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.15 : 2,705.28 = 1,431.03 : x
  2. Step 2: Convert to fraction form
    1,959.15/2,705.28 = 1,431.03/x
  3. Step 3: Cross multiply
    1,959.15x = 2,705.28 × 1,431.03
  4. Step 4: Simplify right side
    1,959.15x = 3,871,336.84
  5. Step 5: Solve for x
    x = 3,871,336.84/1,959.15
  6. Step 6: Final answer
    x = 1,976.03

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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.