Home / 6,243.41-8,613.81-4,120.00

Finding the Fourth Proportional to 6,243.41, 8,613.81 and 4,120.00

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Solution

The fourth proportional to 6,243.41, 8,613.81 and 4,120.00 is: 5,684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,243.41 : 8,613.81 = 4,120.00 : x
  2. Step 2: Convert to fraction form
    6,243.41/8,613.81 = 4,120.00/x
  3. Step 3: Cross multiply
    6,243.41x = 8,613.81 × 4,120.00
  4. Step 4: Simplify right side
    6,243.41x = 35,488,875.67
  5. Step 5: Solve for x
    x = 35,488,875.67/6,243.41
  6. Step 6: Final answer
    x = 5,684.21

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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.