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Finding the Fourth Proportional to 3,666.78, 5,500.18 and 893.45

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Solution

The fourth proportional to 3,666.78, 5,500.18 and 893.45 is: 1,340.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,666.78 : 5,500.18 = 893.45 : x
  2. Step 2: Convert to fraction form
    3,666.78/5,500.18 = 893.45/x
  3. Step 3: Cross multiply
    3,666.78x = 5,500.18 × 893.45
  4. Step 4: Simplify right side
    3,666.78x = 4,914,131.35
  5. Step 5: Solve for x
    x = 4,914,131.35/3,666.78
  6. Step 6: Final answer
    x = 1,340.18

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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.