Home / 2,125.72-3,185.68-1,354.84

Finding the Fourth Proportional to 2,125.72, 3,185.68 and 1,354.84

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Solution

The fourth proportional to 2,125.72, 3,185.68 and 1,354.84 is: 2,030.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.72 : 3,185.68 = 1,354.84 : x
  2. Step 2: Convert to fraction form
    2,125.72/3,185.68 = 1,354.84/x
  3. Step 3: Cross multiply
    2,125.72x = 3,185.68 × 1,354.84
  4. Step 4: Simplify right side
    2,125.72x = 4,316,086.69
  5. Step 5: Solve for x
    x = 4,316,086.69/2,125.72
  6. Step 6: Final answer
    x = 2,030.41

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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.