Home / 5,421.12-8,124.36-2,818.80

Finding the Fourth Proportional to 5,421.12, 8,124.36 and 2,818.80

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Solution

The fourth proportional to 5,421.12, 8,124.36 and 2,818.80 is: 4,224.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.12 : 8,124.36 = 2,818.80 : x
  2. Step 2: Convert to fraction form
    5,421.12/8,124.36 = 2,818.80/x
  3. Step 3: Cross multiply
    5,421.12x = 8,124.36 × 2,818.80
  4. Step 4: Simplify right side
    5,421.12x = 22,900,945.97
  5. Step 5: Solve for x
    x = 22,900,945.97/5,421.12
  6. Step 6: Final answer
    x = 4,224.39

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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.