Home / 3,880.02-5,355.36-2,388.90

Finding the Fourth Proportional to 3,880.02, 5,355.36 and 2,388.90

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Solution

The fourth proportional to 3,880.02, 5,355.36 and 2,388.90 is: 3,297.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.02 : 5,355.36 = 2,388.90 : x
  2. Step 2: Convert to fraction form
    3,880.02/5,355.36 = 2,388.90/x
  3. Step 3: Cross multiply
    3,880.02x = 5,355.36 × 2,388.90
  4. Step 4: Simplify right side
    3,880.02x = 12,793,419.50
  5. Step 5: Solve for x
    x = 12,793,419.50/3,880.02
  6. Step 6: Final answer
    x = 3,297.26

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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.