Home / 5,421.42-8,117.46-2,818.89

Finding the Fourth Proportional to 5,421.42, 8,117.46 and 2,818.89

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Solution

The fourth proportional to 5,421.42, 8,117.46 and 2,818.89 is: 4,220.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.42 : 8,117.46 = 2,818.89 : x
  2. Step 2: Convert to fraction form
    5,421.42/8,117.46 = 2,818.89/x
  3. Step 3: Cross multiply
    5,421.42x = 8,117.46 × 2,818.89
  4. Step 4: Simplify right side
    5,421.42x = 22,882,226.82
  5. Step 5: Solve for x
    x = 22,882,226.82/5,421.42
  6. Step 6: Final answer
    x = 4,220.71

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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.