Home / 1,931.62-2,893.20-1,188.96

Finding the Fourth Proportional to 1,931.62, 2,893.20 and 1,188.96

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Solution

The fourth proportional to 1,931.62, 2,893.20 and 1,188.96 is: 1,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.62 : 2,893.20 = 1,188.96 : x
  2. Step 2: Convert to fraction form
    1,931.62/2,893.20 = 1,188.96/x
  3. Step 3: Cross multiply
    1,931.62x = 2,893.20 × 1,188.96
  4. Step 4: Simplify right side
    1,931.62x = 3,439,899.07
  5. Step 5: Solve for x
    x = 3,439,899.07/1,931.62
  6. Step 6: Final answer
    x = 1,780.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.