Home / 5,425.40-8,138.21-1,727.64

Finding the Fourth Proportional to 5,425.40, 8,138.21 and 1,727.64

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Solution

The fourth proportional to 5,425.40, 8,138.21 and 1,727.64 is: 2,591.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.40 : 8,138.21 = 1,727.64 : x
  2. Step 2: Convert to fraction form
    5,425.40/8,138.21 = 1,727.64/x
  3. Step 3: Cross multiply
    5,425.40x = 8,138.21 × 1,727.64
  4. Step 4: Simplify right side
    5,425.40x = 14,059,888.49
  5. Step 5: Solve for x
    x = 14,059,888.49/5,425.40
  6. Step 6: Final answer
    x = 2,591.50

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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.