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Finding the Fourth Proportional to 8,751.65, 13,127.47 and 3,561.17

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Solution

The fourth proportional to 8,751.65, 13,127.47 and 3,561.17 is: 5,341.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.65 : 13,127.47 = 3,561.17 : x
  2. Step 2: Convert to fraction form
    8,751.65/13,127.47 = 3,561.17/x
  3. Step 3: Cross multiply
    8,751.65x = 13,127.47 × 3,561.17
  4. Step 4: Simplify right side
    8,751.65x = 46,749,077.80
  5. Step 5: Solve for x
    x = 46,749,077.80/8,751.65
  6. Step 6: Final answer
    x = 5,341.75

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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.