Home / 5,479.85-8,221.08-1,782.11

Finding the Fourth Proportional to 5,479.85, 8,221.08 and 1,782.11

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Solution

The fourth proportional to 5,479.85, 8,221.08 and 1,782.11 is: 2,673.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.85 : 8,221.08 = 1,782.11 : x
  2. Step 2: Convert to fraction form
    5,479.85/8,221.08 = 1,782.11/x
  3. Step 3: Cross multiply
    5,479.85x = 8,221.08 × 1,782.11
  4. Step 4: Simplify right side
    5,479.85x = 14,650,868.88
  5. Step 5: Solve for x
    x = 14,650,868.88/5,479.85
  6. Step 6: Final answer
    x = 2,673.59

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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.