Home / 1,256.20-1,884.30-964.60

Finding the Fourth Proportional to 1,256.20, 1,884.30 and 964.60

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Solution

The fourth proportional to 1,256.20, 1,884.30 and 964.60 is: 1,446.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.20 : 1,884.30 = 964.60 : x
  2. Step 2: Convert to fraction form
    1,256.20/1,884.30 = 964.60/x
  3. Step 3: Cross multiply
    1,256.20x = 1,884.30 × 964.60
  4. Step 4: Simplify right side
    1,256.20x = 1,817,595.78
  5. Step 5: Solve for x
    x = 1,817,595.78/1,256.20
  6. Step 6: Final answer
    x = 1,446.90

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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.