Home / 5,234.40-7,851.56-2,156.40

Finding the Fourth Proportional to 5,234.40, 7,851.56 and 2,156.40

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Solution

The fourth proportional to 5,234.40, 7,851.56 and 2,156.40 is: 3,234.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,234.40 : 7,851.56 = 2,156.40 : x
  2. Step 2: Convert to fraction form
    5,234.40/7,851.56 = 2,156.40/x
  3. Step 3: Cross multiply
    5,234.40x = 7,851.56 × 2,156.40
  4. Step 4: Simplify right side
    5,234.40x = 16,931,103.98
  5. Step 5: Solve for x
    x = 16,931,103.98/5,234.40
  6. Step 6: Final answer
    x = 3,234.58

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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.