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Finding the Fourth Proportional to 7,281.80, 10,935.90 and 6,374.60

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Solution

The fourth proportional to 7,281.80, 10,935.90 and 6,374.60 is: 9,573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.80 : 10,935.90 = 6,374.60 : x
  2. Step 2: Convert to fraction form
    7,281.80/10,935.90 = 6,374.60/x
  3. Step 3: Cross multiply
    7,281.80x = 10,935.90 × 6,374.60
  4. Step 4: Simplify right side
    7,281.80x = 69,711,988.14
  5. Step 5: Solve for x
    x = 69,711,988.14/7,281.80
  6. Step 6: Final answer
    x = 9,573.46

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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.