Home / 1,299.20-1,946.28-650.48

Finding the Fourth Proportional to 1,299.20, 1,946.28 and 650.48

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Solution

The fourth proportional to 1,299.20, 1,946.28 and 650.48 is: 974.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.20 : 1,946.28 = 650.48 : x
  2. Step 2: Convert to fraction form
    1,299.20/1,946.28 = 650.48/x
  3. Step 3: Cross multiply
    1,299.20x = 1,946.28 × 650.48
  4. Step 4: Simplify right side
    1,299.20x = 1,266,016.21
  5. Step 5: Solve for x
    x = 1,266,016.21/1,299.20
  6. Step 6: Final answer
    x = 974.46

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1.5x scale

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.