Home / 5,011.20-6,915.84-3,021.72

Finding the Fourth Proportional to 5,011.20, 6,915.84 and 3,021.72

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Solution

The fourth proportional to 5,011.20, 6,915.84 and 3,021.72 is: 4,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,011.20 : 6,915.84 = 3,021.72 : x
  2. Step 2: Convert to fraction form
    5,011.20/6,915.84 = 3,021.72/x
  3. Step 3: Cross multiply
    5,011.20x = 6,915.84 × 3,021.72
  4. Step 4: Simplify right side
    5,011.20x = 20,897,732.04
  5. Step 5: Solve for x
    x = 20,897,732.04/5,011.20
  6. Step 6: Final answer
    x = 4,170.21

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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.