Home / 6,613.80-9,126.35-3,781.91

Finding the Fourth Proportional to 6,613.80, 9,126.35 and 3,781.91

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Solution

The fourth proportional to 6,613.80, 9,126.35 and 3,781.91 is: 5,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.80 : 9,126.35 = 3,781.91 : x
  2. Step 2: Convert to fraction form
    6,613.80/9,126.35 = 3,781.91/x
  3. Step 3: Cross multiply
    6,613.80x = 9,126.35 × 3,781.91
  4. Step 4: Simplify right side
    6,613.80x = 34,514,969.79
  5. Step 5: Solve for x
    x = 34,514,969.79/6,613.80
  6. Step 6: Final answer
    x = 5,218.63

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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.