Home / 1,264.20-1,900.35-1,191.30

Finding the Fourth Proportional to 1,264.20, 1,900.35 and 1,191.30

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Solution

The fourth proportional to 1,264.20, 1,900.35 and 1,191.30 is: 1,790.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.20 : 1,900.35 = 1,191.30 : x
  2. Step 2: Convert to fraction form
    1,264.20/1,900.35 = 1,191.30/x
  3. Step 3: Cross multiply
    1,264.20x = 1,900.35 × 1,191.30
  4. Step 4: Simplify right side
    1,264.20x = 2,263,886.96
  5. Step 5: Solve for x
    x = 2,263,886.96/1,264.20
  6. Step 6: Final answer
    x = 1,790.77

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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.