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Finding the Fourth Proportional to 3,605.03, 4,977.89 and 3,421.56

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Solution

The fourth proportional to 3,605.03, 4,977.89 and 3,421.56 is: 4,724.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.03 : 4,977.89 = 3,421.56 : x
  2. Step 2: Convert to fraction form
    3,605.03/4,977.89 = 3,421.56/x
  3. Step 3: Cross multiply
    3,605.03x = 4,977.89 × 3,421.56
  4. Step 4: Simplify right side
    3,605.03x = 17,032,132.20
  5. Step 5: Solve for x
    x = 17,032,132.20/3,605.03
  6. Step 6: Final answer
    x = 4,724.55

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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.