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Finding the Fourth Proportional to 8,313.57, 12,472.69 and 3,386.74

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Solution

The fourth proportional to 8,313.57, 12,472.69 and 3,386.74 is: 5,081.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.57 : 12,472.69 = 3,386.74 : x
  2. Step 2: Convert to fraction form
    8,313.57/12,472.69 = 3,386.74/x
  3. Step 3: Cross multiply
    8,313.57x = 12,472.69 × 3,386.74
  4. Step 4: Simplify right side
    8,313.57x = 42,241,758.13
  5. Step 5: Solve for x
    x = 42,241,758.13/8,313.57
  6. Step 6: Final answer
    x = 5,081.06

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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.