Home / 8,313.48-11,476.84-6,420.81

Finding the Fourth Proportional to 8,313.48, 11,476.84 and 6,420.81

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Solution

The fourth proportional to 8,313.48, 11,476.84 and 6,420.81 is: 8,863.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.48 : 11,476.84 = 6,420.81 : x
  2. Step 2: Convert to fraction form
    8,313.48/11,476.84 = 6,420.81/x
  3. Step 3: Cross multiply
    8,313.48x = 11,476.84 × 6,420.81
  4. Step 4: Simplify right side
    8,313.48x = 73,690,609.04
  5. Step 5: Solve for x
    x = 73,690,609.04/8,313.48
  6. Step 6: Final answer
    x = 8,863.99

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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.