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Finding the Fourth Proportional to 6,350.53, 8,762.69 and 3,991

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Solution

The fourth proportional to 6,350.53, 8,762.69 and 3,991 is: 5,506.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,350.53 : 8,762.69 = 3,991 : x
  2. Step 2: Convert to fraction form
    6,350.53/8,762.69 = 3,991/x
  3. Step 3: Cross multiply
    6,350.53x = 8,762.69 × 3,991
  4. Step 4: Simplify right side
    6,350.53x = 34,971,895.79
  5. Step 5: Solve for x
    x = 34,971,895.79/6,350.53
  6. Step 6: Final answer
    x = 5,506.93

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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.