Home / 3,428.12-5,140.35-1,087.49

Finding the Fourth Proportional to 3,428.12, 5,140.35 and 1,087.49

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Solution

The fourth proportional to 3,428.12, 5,140.35 and 1,087.49 is: 1,630.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.12 : 5,140.35 = 1,087.49 : x
  2. Step 2: Convert to fraction form
    3,428.12/5,140.35 = 1,087.49/x
  3. Step 3: Cross multiply
    3,428.12x = 5,140.35 × 1,087.49
  4. Step 4: Simplify right side
    3,428.12x = 5,590,092.07
  5. Step 5: Solve for x
    x = 5,590,092.07/3,428.12
  6. Step 6: Final answer
    x = 1,630.66

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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.