Home / 2,821.48-3,895.36-1,878.64

Finding the Fourth Proportional to 2,821.48, 3,895.36 and 1,878.64

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Solution

The fourth proportional to 2,821.48, 3,895.36 and 1,878.64 is: 2,593.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.48 : 3,895.36 = 1,878.64 : x
  2. Step 2: Convert to fraction form
    2,821.48/3,895.36 = 1,878.64/x
  3. Step 3: Cross multiply
    2,821.48x = 3,895.36 × 1,878.64
  4. Step 4: Simplify right side
    2,821.48x = 7,317,979.11
  5. Step 5: Solve for x
    x = 7,317,979.11/2,821.48
  6. Step 6: Final answer
    x = 2,593.67

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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.