Home / 1,528.96-2,291.82-1,311.88

Finding the Fourth Proportional to 1,528.96, 2,291.82 and 1,311.88

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Solution

The fourth proportional to 1,528.96, 2,291.82 and 1,311.88 is: 1,966.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.96 : 2,291.82 = 1,311.88 : x
  2. Step 2: Convert to fraction form
    1,528.96/2,291.82 = 1,311.88/x
  3. Step 3: Cross multiply
    1,528.96x = 2,291.82 × 1,311.88
  4. Step 4: Simplify right side
    1,528.96x = 3,006,592.82
  5. Step 5: Solve for x
    x = 3,006,592.82/1,528.96
  6. Step 6: Final answer
    x = 1,966.43

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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.