Home / 2,427.05-3,639.56-783.15

Finding the Fourth Proportional to 2,427.05, 3,639.56 and 783.15

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Solution

The fourth proportional to 2,427.05, 3,639.56 and 783.15 is: 1,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,427.05 : 3,639.56 = 783.15 : x
  2. Step 2: Convert to fraction form
    2,427.05/3,639.56 = 783.15/x
  3. Step 3: Cross multiply
    2,427.05x = 3,639.56 × 783.15
  4. Step 4: Simplify right side
    2,427.05x = 2,850,317.50
  5. Step 5: Solve for x
    x = 2,850,317.50/2,427.05
  6. Step 6: Final answer
    x = 1,174.40

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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.