Home / 8,390.12-11,578.28-4,613.22

Finding the Fourth Proportional to 8,390.12, 11,578.28 and 4,613.22

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Solution

The fourth proportional to 8,390.12, 11,578.28 and 4,613.22 is: 6,366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.12 : 11,578.28 = 4,613.22 : x
  2. Step 2: Convert to fraction form
    8,390.12/11,578.28 = 4,613.22/x
  3. Step 3: Cross multiply
    8,390.12x = 11,578.28 × 4,613.22
  4. Step 4: Simplify right side
    8,390.12x = 53,413,129.80
  5. Step 5: Solve for x
    x = 53,413,129.80/8,390.12
  6. Step 6: Final answer
    x = 6,366.20

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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.