Home / 8,116.12-12,179.64-5,269.40

Finding the Fourth Proportional to 8,116.12, 12,179.64 and 5,269.40

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Solution

The fourth proportional to 8,116.12, 12,179.64 and 5,269.40 is: 7,907.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,116.12 : 12,179.64 = 5,269.40 : x
  2. Step 2: Convert to fraction form
    8,116.12/12,179.64 = 5,269.40/x
  3. Step 3: Cross multiply
    8,116.12x = 12,179.64 × 5,269.40
  4. Step 4: Simplify right side
    8,116.12x = 64,179,395.02
  5. Step 5: Solve for x
    x = 64,179,395.02/8,116.12
  6. Step 6: Final answer
    x = 7,907.64

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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.