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Finding the Fourth Proportional to 11,970.90, 17,957.39 and 3,652.79

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Solution

The fourth proportional to 11,970.90, 17,957.39 and 3,652.79 is: 5,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.90 : 17,957.39 = 3,652.79 : x
  2. Step 2: Convert to fraction form
    11,970.90/17,957.39 = 3,652.79/x
  3. Step 3: Cross multiply
    11,970.90x = 17,957.39 × 3,652.79
  4. Step 4: Simplify right side
    11,970.90x = 65,594,574.62
  5. Step 5: Solve for x
    x = 65,594,574.62/11,970.90
  6. Step 6: Final answer
    x = 5,479.50

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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.