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Finding the Fourth Proportional to 7,907.58, 11,861.73 and 2,642.99

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Solution

The fourth proportional to 7,907.58, 11,861.73 and 2,642.99 is: 3,964.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,907.58 : 11,861.73 = 2,642.99 : x
  2. Step 2: Convert to fraction form
    7,907.58/11,861.73 = 2,642.99/x
  3. Step 3: Cross multiply
    7,907.58x = 11,861.73 × 2,642.99
  4. Step 4: Simplify right side
    7,907.58x = 31,350,374.46
  5. Step 5: Solve for x
    x = 31,350,374.46/7,907.58
  6. Step 6: Final answer
    x = 3,964.60

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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.