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Finding the Fourth Proportional to 9,334.63, 12,881.79 and 5,355.57

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Solution

The fourth proportional to 9,334.63, 12,881.79 and 5,355.57 is: 7,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,334.63 : 12,881.79 = 5,355.57 : x
  2. Step 2: Convert to fraction form
    9,334.63/12,881.79 = 5,355.57/x
  3. Step 3: Cross multiply
    9,334.63x = 12,881.79 × 5,355.57
  4. Step 4: Simplify right side
    9,334.63x = 68,989,301.29
  5. Step 5: Solve for x
    x = 68,989,301.29/9,334.63
  6. Step 6: Final answer
    x = 7,390.69

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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.