Home / 5,275.36-7,912.96-1,379.84

Finding the Fourth Proportional to 5,275.36, 7,912.96 and 1,379.84

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Solution

The fourth proportional to 5,275.36, 7,912.96 and 1,379.84 is: 2,069.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.36 : 7,912.96 = 1,379.84 : x
  2. Step 2: Convert to fraction form
    5,275.36/7,912.96 = 1,379.84/x
  3. Step 3: Cross multiply
    5,275.36x = 7,912.96 × 1,379.84
  4. Step 4: Simplify right side
    5,275.36x = 10,918,618.73
  5. Step 5: Solve for x
    x = 10,918,618.73/5,275.36
  6. Step 6: Final answer
    x = 2,069.74

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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.