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Finding the Fourth Proportional to 7,153.65, 9,871.88 and 4,505.49

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Solution

The fourth proportional to 7,153.65, 9,871.88 and 4,505.49 is: 6,217.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.65 : 9,871.88 = 4,505.49 : x
  2. Step 2: Convert to fraction form
    7,153.65/9,871.88 = 4,505.49/x
  3. Step 3: Cross multiply
    7,153.65x = 9,871.88 × 4,505.49
  4. Step 4: Simplify right side
    7,153.65x = 44,477,634.09
  5. Step 5: Solve for x
    x = 44,477,634.09/7,153.65
  6. Step 6: Final answer
    x = 6,217.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.