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Finding the Fourth Proportional to 8,929, 13,393.53 and 2,355.70

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Solution

The fourth proportional to 8,929, 13,393.53 and 2,355.70 is: 3,533.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929 : 13,393.53 = 2,355.70 : x
  2. Step 2: Convert to fraction form
    8,929/13,393.53 = 2,355.70/x
  3. Step 3: Cross multiply
    8,929x = 13,393.53 × 2,355.70
  4. Step 4: Simplify right side
    8,929x = 31,551,138.62
  5. Step 5: Solve for x
    x = 31,551,138.62/8,929
  6. Step 6: Final answer
    x = 3,533.56

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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.