Home / 5,140.14-7,706.55-2,219.28

Finding the Fourth Proportional to 5,140.14, 7,706.55 and 2,219.28

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Solution

The fourth proportional to 5,140.14, 7,706.55 and 2,219.28 is: 3,327.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.14 : 7,706.55 = 2,219.28 : x
  2. Step 2: Convert to fraction form
    5,140.14/7,706.55 = 2,219.28/x
  3. Step 3: Cross multiply
    5,140.14x = 7,706.55 × 2,219.28
  4. Step 4: Simplify right side
    5,140.14x = 17,102,971.71
  5. Step 5: Solve for x
    x = 17,102,971.71/5,140.14
  6. Step 6: Final answer
    x = 3,327.34

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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.