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Finding the Fourth Proportional to 8,759.64, 12,083.26 and 5,175.64

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Solution

The fourth proportional to 8,759.64, 12,083.26 and 5,175.64 is: 7,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.64 : 12,083.26 = 5,175.64 : x
  2. Step 2: Convert to fraction form
    8,759.64/12,083.26 = 5,175.64/x
  3. Step 3: Cross multiply
    8,759.64x = 12,083.26 × 5,175.64
  4. Step 4: Simplify right side
    8,759.64x = 62,538,603.79
  5. Step 5: Solve for x
    x = 62,538,603.79/8,759.64
  6. Step 6: Final answer
    x = 7,139.40

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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.