Home / 8,320.33-12,477.75-2,772.15

Finding the Fourth Proportional to 8,320.33, 12,477.75 and 2,772.15

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Solution

The fourth proportional to 8,320.33, 12,477.75 and 2,772.15 is: 4,157.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.33 : 12,477.75 = 2,772.15 : x
  2. Step 2: Convert to fraction form
    8,320.33/12,477.75 = 2,772.15/x
  3. Step 3: Cross multiply
    8,320.33x = 12,477.75 × 2,772.15
  4. Step 4: Simplify right side
    8,320.33x = 34,590,194.66
  5. Step 5: Solve for x
    x = 34,590,194.66/8,320.33
  6. Step 6: Final answer
    x = 4,157.31

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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.