Home / 2,880.25-4,321.40-1,420.44

Finding the Fourth Proportional to 2,880.25, 4,321.40 and 1,420.44

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Solution

The fourth proportional to 2,880.25, 4,321.40 and 1,420.44 is: 2,131.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.25 : 4,321.40 = 1,420.44 : x
  2. Step 2: Convert to fraction form
    2,880.25/4,321.40 = 1,420.44/x
  3. Step 3: Cross multiply
    2,880.25x = 4,321.40 × 1,420.44
  4. Step 4: Simplify right side
    2,880.25x = 6,138,289.42
  5. Step 5: Solve for x
    x = 6,138,289.42/2,880.25
  6. Step 6: Final answer
    x = 2,131.17

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1.5x scale

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.