Home / 6,615.99-9,127.68-3,781.32

Finding the Fourth Proportional to 6,615.99, 9,127.68 and 3,781.32

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Solution

The fourth proportional to 6,615.99, 9,127.68 and 3,781.32 is: 5,216.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.99 : 9,127.68 = 3,781.32 : x
  2. Step 2: Convert to fraction form
    6,615.99/9,127.68 = 3,781.32/x
  3. Step 3: Cross multiply
    6,615.99x = 9,127.68 × 3,781.32
  4. Step 4: Simplify right side
    6,615.99x = 34,514,678.94
  5. Step 5: Solve for x
    x = 34,514,678.94/6,615.99
  6. Step 6: Final answer
    x = 5,216.86

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1.5x scale

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.