Home / 5,420.22-7,479.95-3,182.09

Finding the Fourth Proportional to 5,420.22, 7,479.95 and 3,182.09

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Solution

The fourth proportional to 5,420.22, 7,479.95 and 3,182.09 is: 4,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.22 : 7,479.95 = 3,182.09 : x
  2. Step 2: Convert to fraction form
    5,420.22/7,479.95 = 3,182.09/x
  3. Step 3: Cross multiply
    5,420.22x = 7,479.95 × 3,182.09
  4. Step 4: Simplify right side
    5,420.22x = 23,801,820.79
  5. Step 5: Solve for x
    x = 23,801,820.79/5,420.22
  6. Step 6: Final answer
    x = 4,391.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.