Home / 6,215.49-9,321.77-3,987.59

Finding the Fourth Proportional to 6,215.49, 9,321.77 and 3,987.59

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Solution

The fourth proportional to 6,215.49, 9,321.77 and 3,987.59 is: 5,980.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,215.49 : 9,321.77 = 3,987.59 : x
  2. Step 2: Convert to fraction form
    6,215.49/9,321.77 = 3,987.59/x
  3. Step 3: Cross multiply
    6,215.49x = 9,321.77 × 3,987.59
  4. Step 4: Simplify right side
    6,215.49x = 37,171,360.19
  5. Step 5: Solve for x
    x = 37,171,360.19/6,215.49
  6. Step 6: Final answer
    x = 5,980.44

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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.