Home / 3,428.55-5,141.77-1,784.20

Finding the Fourth Proportional to 3,428.55, 5,141.77 and 1,784.20

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Solution

The fourth proportional to 3,428.55, 5,141.77 and 1,784.20 is: 2,675.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.55 : 5,141.77 = 1,784.20 : x
  2. Step 2: Convert to fraction form
    3,428.55/5,141.77 = 1,784.20/x
  3. Step 3: Cross multiply
    3,428.55x = 5,141.77 × 1,784.20
  4. Step 4: Simplify right side
    3,428.55x = 9,173,937.11
  5. Step 5: Solve for x
    x = 9,173,937.11/3,428.55
  6. Step 6: Final answer
    x = 2,675.75

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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.