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Finding the Fourth Proportional to 3,065.81, 4,598.72 and 757.31

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Solution

The fourth proportional to 3,065.81, 4,598.72 and 757.31 is: 1,135.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,065.81 : 4,598.72 = 757.31 : x
  2. Step 2: Convert to fraction form
    3,065.81/4,598.72 = 757.31/x
  3. Step 3: Cross multiply
    3,065.81x = 4,598.72 × 757.31
  4. Step 4: Simplify right side
    3,065.81x = 3,482,656.64
  5. Step 5: Solve for x
    x = 3,482,656.64/3,065.81
  6. Step 6: Final answer
    x = 1,135.97

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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.