Home / 2,146.32-2,961.48-1,361.40

Finding the Fourth Proportional to 2,146.32, 2,961.48 and 1,361.40

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Solution

The fourth proportional to 2,146.32, 2,961.48 and 1,361.40 is: 1,878.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.32 : 2,961.48 = 1,361.40 : x
  2. Step 2: Convert to fraction form
    2,146.32/2,961.48 = 1,361.40/x
  3. Step 3: Cross multiply
    2,146.32x = 2,961.48 × 1,361.40
  4. Step 4: Simplify right side
    2,146.32x = 4,031,758.87
  5. Step 5: Solve for x
    x = 4,031,758.87/2,146.32
  6. Step 6: Final answer
    x = 1,878.45

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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.