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Finding the Fourth Proportional to 6,318.51, 8,719.42 and 3,486.15

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Solution

The fourth proportional to 6,318.51, 8,719.42 and 3,486.15 is: 4,810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.51 : 8,719.42 = 3,486.15 : x
  2. Step 2: Convert to fraction form
    6,318.51/8,719.42 = 3,486.15/x
  3. Step 3: Cross multiply
    6,318.51x = 8,719.42 × 3,486.15
  4. Step 4: Simplify right side
    6,318.51x = 30,397,206.03
  5. Step 5: Solve for x
    x = 30,397,206.03/6,318.51
  6. Step 6: Final answer
    x = 4,810.82

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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.