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Finding the Fourth Proportional to 8,707.17, 13,065.95 and 3,160.95

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Solution

The fourth proportional to 8,707.17, 13,065.95 and 3,160.95 is: 4,743.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.17 : 13,065.95 = 3,160.95 : x
  2. Step 2: Convert to fraction form
    8,707.17/13,065.95 = 3,160.95/x
  3. Step 3: Cross multiply
    8,707.17x = 13,065.95 × 3,160.95
  4. Step 4: Simplify right side
    8,707.17x = 41,300,798.85
  5. Step 5: Solve for x
    x = 41,300,798.85/8,707.17
  6. Step 6: Final answer
    x = 4,743.31

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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.