Home / 2,125.28-3,186.63-892.05

Finding the Fourth Proportional to 2,125.28, 3,186.63 and 892.05

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Solution

The fourth proportional to 2,125.28, 3,186.63 and 892.05 is: 1,337.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.28 : 3,186.63 = 892.05 : x
  2. Step 2: Convert to fraction form
    2,125.28/3,186.63 = 892.05/x
  3. Step 3: Cross multiply
    2,125.28x = 3,186.63 × 892.05
  4. Step 4: Simplify right side
    2,125.28x = 2,842,633.29
  5. Step 5: Solve for x
    x = 2,842,633.29/2,125.28
  6. Step 6: Final answer
    x = 1,337.54

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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.