Home / 1,952.21-2,689.53-1,361.72

Finding the Fourth Proportional to 1,952.21, 2,689.53 and 1,361.72

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Solution

The fourth proportional to 1,952.21, 2,689.53 and 1,361.72 is: 1,876.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,952.21 : 2,689.53 = 1,361.72 : x
  2. Step 2: Convert to fraction form
    1,952.21/2,689.53 = 1,361.72/x
  3. Step 3: Cross multiply
    1,952.21x = 2,689.53 × 1,361.72
  4. Step 4: Simplify right side
    1,952.21x = 3,662,386.79
  5. Step 5: Solve for x
    x = 3,662,386.79/1,952.21
  6. Step 6: Final answer
    x = 1,876.02

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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.