Home / 5,421.70-8,132.55-2,648.80

Finding the Fourth Proportional to 5,421.70, 8,132.55 and 2,648.80

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Solution

The fourth proportional to 5,421.70, 8,132.55 and 2,648.80 is: 3,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.70 : 8,132.55 = 2,648.80 : x
  2. Step 2: Convert to fraction form
    5,421.70/8,132.55 = 2,648.80/x
  3. Step 3: Cross multiply
    5,421.70x = 8,132.55 × 2,648.80
  4. Step 4: Simplify right side
    5,421.70x = 21,541,498.44
  5. Step 5: Solve for x
    x = 21,541,498.44/5,421.70
  6. Step 6: Final answer
    x = 3,973.20

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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.