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Finding the Fourth Proportional to 8,057.79, 12,085.97 and 4,724.19

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Solution

The fourth proportional to 8,057.79, 12,085.97 and 4,724.19 is: 7,085.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,057.79 : 12,085.97 = 4,724.19 : x
  2. Step 2: Convert to fraction form
    8,057.79/12,085.97 = 4,724.19/x
  3. Step 3: Cross multiply
    8,057.79x = 12,085.97 × 4,724.19
  4. Step 4: Simplify right side
    8,057.79x = 57,096,394.99
  5. Step 5: Solve for x
    x = 57,096,394.99/8,057.79
  6. Step 6: Final answer
    x = 7,085.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.