Home / 3,690.24-5,533.44-1,380

Finding the Fourth Proportional to 3,690.24, 5,533.44 and 1,380

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Solution

The fourth proportional to 3,690.24, 5,533.44 and 1,380 is: 2,069.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.24 : 5,533.44 = 1,380 : x
  2. Step 2: Convert to fraction form
    3,690.24/5,533.44 = 1,380/x
  3. Step 3: Cross multiply
    3,690.24x = 5,533.44 × 1,380
  4. Step 4: Simplify right side
    3,690.24x = 7,636,147.20
  5. Step 5: Solve for x
    x = 7,636,147.20/3,690.24
  6. Step 6: Final answer
    x = 2,069.28

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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.