Home / 6,426.40-9,640.05-2,728.21

Finding the Fourth Proportional to 6,426.40, 9,640.05 and 2,728.21

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Solution

The fourth proportional to 6,426.40, 9,640.05 and 2,728.21 is: 4,092.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,426.40 : 9,640.05 = 2,728.21 : x
  2. Step 2: Convert to fraction form
    6,426.40/9,640.05 = 2,728.21/x
  3. Step 3: Cross multiply
    6,426.40x = 9,640.05 × 2,728.21
  4. Step 4: Simplify right side
    6,426.40x = 26,300,080.81
  5. Step 5: Solve for x
    x = 26,300,080.81/6,426.40
  6. Step 6: Final answer
    x = 4,092.51

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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.