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Finding the Fourth Proportional to 8,957.70, 12,365.73 and 5,815.98

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Solution

The fourth proportional to 8,957.70, 12,365.73 and 5,815.98 is: 8,028.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.70 : 12,365.73 = 5,815.98 : x
  2. Step 2: Convert to fraction form
    8,957.70/12,365.73 = 5,815.98/x
  3. Step 3: Cross multiply
    8,957.70x = 12,365.73 × 5,815.98
  4. Step 4: Simplify right side
    8,957.70x = 71,918,838.37
  5. Step 5: Solve for x
    x = 71,918,838.37/8,957.70
  6. Step 6: Final answer
    x = 8,028.72

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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.