Home / 3,428.08-5,139.96-1,890.16

Finding the Fourth Proportional to 3,428.08, 5,139.96 and 1,890.16

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Solution

The fourth proportional to 3,428.08, 5,139.96 and 1,890.16 is: 2,834.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.08 : 5,139.96 = 1,890.16 : x
  2. Step 2: Convert to fraction form
    3,428.08/5,139.96 = 1,890.16/x
  3. Step 3: Cross multiply
    3,428.08x = 5,139.96 × 1,890.16
  4. Step 4: Simplify right side
    3,428.08x = 9,715,346.79
  5. Step 5: Solve for x
    x = 9,715,346.79/3,428.08
  6. Step 6: Final answer
    x = 2,834.05

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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.