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Finding the Fourth Proportional to 8,979.70, 13,470.48 and 3,437.72

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Solution

The fourth proportional to 8,979.70, 13,470.48 and 3,437.72 is: 5,156.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.70 : 13,470.48 = 3,437.72 : x
  2. Step 2: Convert to fraction form
    8,979.70/13,470.48 = 3,437.72/x
  3. Step 3: Cross multiply
    8,979.70x = 13,470.48 × 3,437.72
  4. Step 4: Simplify right side
    8,979.70x = 46,307,738.51
  5. Step 5: Solve for x
    x = 46,307,738.51/8,979.70
  6. Step 6: Final answer
    x = 5,156.94

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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.