Home / 5,503.80-8,255.70-2,215.20

Finding the Fourth Proportional to 5,503.80, 8,255.70 and 2,215.20

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Solution

The fourth proportional to 5,503.80, 8,255.70 and 2,215.20 is: 3,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,503.80 : 8,255.70 = 2,215.20 : x
  2. Step 2: Convert to fraction form
    5,503.80/8,255.70 = 2,215.20/x
  3. Step 3: Cross multiply
    5,503.80x = 8,255.70 × 2,215.20
  4. Step 4: Simplify right side
    5,503.80x = 18,288,026.64
  5. Step 5: Solve for x
    x = 18,288,026.64/5,503.80
  6. Step 6: Final answer
    x = 3,322.80

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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.