Home / 8,967.78-13,455.54-3,422.79

Finding the Fourth Proportional to 8,967.78, 13,455.54 and 3,422.79

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Solution

The fourth proportional to 8,967.78, 13,455.54 and 3,422.79 is: 5,135.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,967.78 : 13,455.54 = 3,422.79 : x
  2. Step 2: Convert to fraction form
    8,967.78/13,455.54 = 3,422.79/x
  3. Step 3: Cross multiply
    8,967.78x = 13,455.54 × 3,422.79
  4. Step 4: Simplify right side
    8,967.78x = 46,055,487.76
  5. Step 5: Solve for x
    x = 46,055,487.76/8,967.78
  6. Step 6: Final answer
    x = 5,135.66

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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.