Home / 2,142.32-2,956.88-1,357.44

Finding the Fourth Proportional to 2,142.32, 2,956.88 and 1,357.44

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Solution

The fourth proportional to 2,142.32, 2,956.88 and 1,357.44 is: 1,873.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.32 : 2,956.88 = 1,357.44 : x
  2. Step 2: Convert to fraction form
    2,142.32/2,956.88 = 1,357.44/x
  3. Step 3: Cross multiply
    2,142.32x = 2,956.88 × 1,357.44
  4. Step 4: Simplify right side
    2,142.32x = 4,013,787.19
  5. Step 5: Solve for x
    x = 4,013,787.19/2,142.32
  6. Step 6: Final answer
    x = 1,873.57

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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.