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Finding the Fourth Proportional to 8,580.65, 11,837.78 and 5,220.77

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Solution

The fourth proportional to 8,580.65, 11,837.78 and 5,220.77 is: 7,202.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,580.65 : 11,837.78 = 5,220.77 : x
  2. Step 2: Convert to fraction form
    8,580.65/11,837.78 = 5,220.77/x
  3. Step 3: Cross multiply
    8,580.65x = 11,837.78 × 5,220.77
  4. Step 4: Simplify right side
    8,580.65x = 61,802,270.99
  5. Step 5: Solve for x
    x = 61,802,270.99/8,580.65
  6. Step 6: Final answer
    x = 7,202.52

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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.