Home / 3,904.70-5,389-2,511.50

Finding the Fourth Proportional to 3,904.70, 5,389 and 2,511.50

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Solution

The fourth proportional to 3,904.70, 5,389 and 2,511.50 is: 3,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.70 : 5,389 = 2,511.50 : x
  2. Step 2: Convert to fraction form
    3,904.70/5,389 = 2,511.50/x
  3. Step 3: Cross multiply
    3,904.70x = 5,389 × 2,511.50
  4. Step 4: Simplify right side
    3,904.70x = 13,534,473.50
  5. Step 5: Solve for x
    x = 13,534,473.50/3,904.70
  6. Step 6: Final answer
    x = 3,466.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.