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Finding the Fourth Proportional to 8,355.18, 11,530.18 and 4,578.39

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Solution

The fourth proportional to 8,355.18, 11,530.18 and 4,578.39 is: 6,318.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355.18 : 11,530.18 = 4,578.39 : x
  2. Step 2: Convert to fraction form
    8,355.18/11,530.18 = 4,578.39/x
  3. Step 3: Cross multiply
    8,355.18x = 11,530.18 × 4,578.39
  4. Step 4: Simplify right side
    8,355.18x = 52,789,666.53
  5. Step 5: Solve for x
    x = 52,789,666.53/8,355.18
  6. Step 6: Final answer
    x = 6,318.19

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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.