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Finding the Fourth Proportional to 3,676.77, 5,515.16 and 903.42

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Solution

The fourth proportional to 3,676.77, 5,515.16 and 903.42 is: 1,355.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.77 : 5,515.16 = 903.42 : x
  2. Step 2: Convert to fraction form
    3,676.77/5,515.16 = 903.42/x
  3. Step 3: Cross multiply
    3,676.77x = 5,515.16 × 903.42
  4. Step 4: Simplify right side
    3,676.77x = 4,982,501.33
  5. Step 5: Solve for x
    x = 4,982,501.33/3,676.77
  6. Step 6: Final answer
    x = 1,355.13

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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.