Home / 2,156.30-3,234.45-2,125.60

Finding the Fourth Proportional to 2,156.30, 3,234.45 and 2,125.60

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Solution

The fourth proportional to 2,156.30, 3,234.45 and 2,125.60 is: 3,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.30 : 3,234.45 = 2,125.60 : x
  2. Step 2: Convert to fraction form
    2,156.30/3,234.45 = 2,125.60/x
  3. Step 3: Cross multiply
    2,156.30x = 3,234.45 × 2,125.60
  4. Step 4: Simplify right side
    2,156.30x = 6,875,146.92
  5. Step 5: Solve for x
    x = 6,875,146.92/2,156.30
  6. Step 6: Final answer
    x = 3,188.40

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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.