Home / 8,431.25-11,634.91-4,654.40

Finding the Fourth Proportional to 8,431.25, 11,634.91 and 4,654.40

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Solution

The fourth proportional to 8,431.25, 11,634.91 and 4,654.40 is: 6,422.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.25 : 11,634.91 = 4,654.40 : x
  2. Step 2: Convert to fraction form
    8,431.25/11,634.91 = 4,654.40/x
  3. Step 3: Cross multiply
    8,431.25x = 11,634.91 × 4,654.40
  4. Step 4: Simplify right side
    8,431.25x = 54,153,525.10
  5. Step 5: Solve for x
    x = 54,153,525.10/8,431.25
  6. Step 6: Final answer
    x = 6,422.95

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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.