Home / 8,880.75-13,281.84-7,900.47

Finding the Fourth Proportional to 8,880.75, 13,281.84 and 7,900.47

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Solution

The fourth proportional to 8,880.75, 13,281.84 and 7,900.47 is: 11,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.75 : 13,281.84 = 7,900.47 : x
  2. Step 2: Convert to fraction form
    8,880.75/13,281.84 = 7,900.47/x
  3. Step 3: Cross multiply
    8,880.75x = 13,281.84 × 7,900.47
  4. Step 4: Simplify right side
    8,880.75x = 104,932,778.46
  5. Step 5: Solve for x
    x = 104,932,778.46/8,880.75
  6. Step 6: Final answer
    x = 11,815.76

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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.