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Finding the Fourth Proportional to 8,907.86, 13,357.70 and 2,581.30

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Solution

The fourth proportional to 8,907.86, 13,357.70 and 2,581.30 is: 3,870.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.86 : 13,357.70 = 2,581.30 : x
  2. Step 2: Convert to fraction form
    8,907.86/13,357.70 = 2,581.30/x
  3. Step 3: Cross multiply
    8,907.86x = 13,357.70 × 2,581.30
  4. Step 4: Simplify right side
    8,907.86x = 34,480,231.01
  5. Step 5: Solve for x
    x = 34,480,231.01/8,907.86
  6. Step 6: Final answer
    x = 3,870.76

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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.