Home / 5,519.25-8,278.88-1,415.25

Finding the Fourth Proportional to 5,519.25, 8,278.88 and 1,415.25

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Solution

The fourth proportional to 5,519.25, 8,278.88 and 1,415.25 is: 2,122.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,519.25 : 8,278.88 = 1,415.25 : x
  2. Step 2: Convert to fraction form
    5,519.25/8,278.88 = 1,415.25/x
  3. Step 3: Cross multiply
    5,519.25x = 8,278.88 × 1,415.25
  4. Step 4: Simplify right side
    5,519.25x = 11,716,677.84
  5. Step 5: Solve for x
    x = 11,716,677.84/5,519.25
  6. Step 6: Final answer
    x = 2,122.88

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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.