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Finding the Fourth Proportional to 9,159.87, 12,640.73 and 4,968.21

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Solution

The fourth proportional to 9,159.87, 12,640.73 and 4,968.21 is: 6,856.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.87 : 12,640.73 = 4,968.21 : x
  2. Step 2: Convert to fraction form
    9,159.87/12,640.73 = 4,968.21/x
  3. Step 3: Cross multiply
    9,159.87x = 12,640.73 × 4,968.21
  4. Step 4: Simplify right side
    9,159.87x = 62,801,776.35
  5. Step 5: Solve for x
    x = 62,801,776.35/9,159.87
  6. Step 6: Final answer
    x = 6,856.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.