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Finding the Fourth Proportional to 8,653.74, 12,933.20 and 6,318.68

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Solution

The fourth proportional to 8,653.74, 12,933.20 and 6,318.68 is: 9,443.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,653.74 : 12,933.20 = 6,318.68 : x
  2. Step 2: Convert to fraction form
    8,653.74/12,933.20 = 6,318.68/x
  3. Step 3: Cross multiply
    8,653.74x = 12,933.20 × 6,318.68
  4. Step 4: Simplify right side
    8,653.74x = 81,720,655.92
  5. Step 5: Solve for x
    x = 81,720,655.92/8,653.74
  6. Step 6: Final answer
    x = 9,443.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.