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Finding the Fourth Proportional to 8,777.78, 13,160.52 and 3,230.40

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Solution

The fourth proportional to 8,777.78, 13,160.52 and 3,230.40 is: 4,843.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,777.78 : 13,160.52 = 3,230.40 : x
  2. Step 2: Convert to fraction form
    8,777.78/13,160.52 = 3,230.40/x
  3. Step 3: Cross multiply
    8,777.78x = 13,160.52 × 3,230.40
  4. Step 4: Simplify right side
    8,777.78x = 42,513,786.26
  5. Step 5: Solve for x
    x = 42,513,786.26/8,777.78
  6. Step 6: Final answer
    x = 4,843.34

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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.