Home / 3,867.78-5,802.31-1,270.14

Finding the Fourth Proportional to 3,867.78, 5,802.31 and 1,270.14

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Solution

The fourth proportional to 3,867.78, 5,802.31 and 1,270.14 is: 1,905.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.78 : 5,802.31 = 1,270.14 : x
  2. Step 2: Convert to fraction form
    3,867.78/5,802.31 = 1,270.14/x
  3. Step 3: Cross multiply
    3,867.78x = 5,802.31 × 1,270.14
  4. Step 4: Simplify right side
    3,867.78x = 7,369,746.02
  5. Step 5: Solve for x
    x = 7,369,746.02/3,867.78
  6. Step 6: Final answer
    x = 1,905.42

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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.