Home / 3,428.13-5,142.48-1,555.17

Finding the Fourth Proportional to 3,428.13, 5,142.48 and 1,555.17

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Solution

The fourth proportional to 3,428.13, 5,142.48 and 1,555.17 is: 2,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.13 : 5,142.48 = 1,555.17 : x
  2. Step 2: Convert to fraction form
    3,428.13/5,142.48 = 1,555.17/x
  3. Step 3: Cross multiply
    3,428.13x = 5,142.48 × 1,555.17
  4. Step 4: Simplify right side
    3,428.13x = 7,997,430.62
  5. Step 5: Solve for x
    x = 7,997,430.62/3,428.13
  6. Step 6: Final answer
    x = 2,332.88

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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.