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Finding the Fourth Proportional to 5,969.60, 8,943.60 and 5,105.60

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Solution

The fourth proportional to 5,969.60, 8,943.60 and 5,105.60 is: 7,649.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,969.60 : 8,943.60 = 5,105.60 : x
  2. Step 2: Convert to fraction form
    5,969.60/8,943.60 = 5,105.60/x
  3. Step 3: Cross multiply
    5,969.60x = 8,943.60 × 5,105.60
  4. Step 4: Simplify right side
    5,969.60x = 45,662,444.16
  5. Step 5: Solve for x
    x = 45,662,444.16/5,969.60
  6. Step 6: Final answer
    x = 7,649.16

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1.5x scale

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.