Home / 8,518.28-12,782.39-3,587.63

Finding the Fourth Proportional to 8,518.28, 12,782.39 and 3,587.63

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Solution

The fourth proportional to 8,518.28, 12,782.39 and 3,587.63 is: 5,383.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.28 : 12,782.39 = 3,587.63 : x
  2. Step 2: Convert to fraction form
    8,518.28/12,782.39 = 3,587.63/x
  3. Step 3: Cross multiply
    8,518.28x = 12,782.39 × 3,587.63
  4. Step 4: Simplify right side
    8,518.28x = 45,858,485.84
  5. Step 5: Solve for x
    x = 45,858,485.84/8,518.28
  6. Step 6: Final answer
    x = 5,383.54

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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.