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Finding the Fourth Proportional to 7,285.60, 10,929.60 and 2,356.48

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Solution

The fourth proportional to 7,285.60, 10,929.60 and 2,356.48 is: 3,535.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,285.60 : 10,929.60 = 2,356.48 : x
  2. Step 2: Convert to fraction form
    7,285.60/10,929.60 = 2,356.48/x
  3. Step 3: Cross multiply
    7,285.60x = 10,929.60 × 2,356.48
  4. Step 4: Simplify right side
    7,285.60x = 25,755,383.81
  5. Step 5: Solve for x
    x = 25,755,383.81/7,285.60
  6. Step 6: Final answer
    x = 3,535.11

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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.