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Finding the Fourth Proportional to 3,770.99, 5,656.55 and 1,305.89

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Solution

The fourth proportional to 3,770.99, 5,656.55 and 1,305.89 is: 1,958.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,770.99 : 5,656.55 = 1,305.89 : x
  2. Step 2: Convert to fraction form
    3,770.99/5,656.55 = 1,305.89/x
  3. Step 3: Cross multiply
    3,770.99x = 5,656.55 × 1,305.89
  4. Step 4: Simplify right side
    3,770.99x = 7,386,807.06
  5. Step 5: Solve for x
    x = 7,386,807.06/3,770.99
  6. Step 6: Final answer
    x = 1,958.85

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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.