Home / 6,426.30-9,640.80-1,983.60

Finding the Fourth Proportional to 6,426.30, 9,640.80 and 1,983.60

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Solution

The fourth proportional to 6,426.30, 9,640.80 and 1,983.60 is: 2,975.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,426.30 : 9,640.80 = 1,983.60 : x
  2. Step 2: Convert to fraction form
    6,426.30/9,640.80 = 1,983.60/x
  3. Step 3: Cross multiply
    6,426.30x = 9,640.80 × 1,983.60
  4. Step 4: Simplify right side
    6,426.30x = 19,123,490.88
  5. Step 5: Solve for x
    x = 19,123,490.88/6,426.30
  6. Step 6: Final answer
    x = 2,975.82

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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.