Home / 3,580.90-5,370.03-1,240.30

Finding the Fourth Proportional to 3,580.90, 5,370.03 and 1,240.30

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Solution

The fourth proportional to 3,580.90, 5,370.03 and 1,240.30 is: 1,859.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.90 : 5,370.03 = 1,240.30 : x
  2. Step 2: Convert to fraction form
    3,580.90/5,370.03 = 1,240.30/x
  3. Step 3: Cross multiply
    3,580.90x = 5,370.03 × 1,240.30
  4. Step 4: Simplify right side
    3,580.90x = 6,660,421.36
  5. Step 5: Solve for x
    x = 6,660,421.36/3,580.90
  6. Step 6: Final answer
    x = 1,859.99

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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.