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Finding the Fourth Proportional to 8,762.54, 13,145.53 and 3,215.93

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Solution

The fourth proportional to 8,762.54, 13,145.53 and 3,215.93 is: 4,824.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.54 : 13,145.53 = 3,215.93 : x
  2. Step 2: Convert to fraction form
    8,762.54/13,145.53 = 3,215.93/x
  3. Step 3: Cross multiply
    8,762.54x = 13,145.53 × 3,215.93
  4. Step 4: Simplify right side
    8,762.54x = 42,275,104.29
  5. Step 5: Solve for x
    x = 42,275,104.29/8,762.54
  6. Step 6: Final answer
    x = 4,824.53

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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.