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Finding the Fourth Proportional to 8,722.16, 12,036.93 and 4,743.26

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Solution

The fourth proportional to 8,722.16, 12,036.93 and 4,743.26 is: 6,545.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.16 : 12,036.93 = 4,743.26 : x
  2. Step 2: Convert to fraction form
    8,722.16/12,036.93 = 4,743.26/x
  3. Step 3: Cross multiply
    8,722.16x = 12,036.93 × 4,743.26
  4. Step 4: Simplify right side
    8,722.16x = 57,094,288.59
  5. Step 5: Solve for x
    x = 57,094,288.59/8,722.16
  6. Step 6: Final answer
    x = 6,545.89

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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.