Home / 8,543.12-11,785.32-6,651.36

Finding the Fourth Proportional to 8,543.12, 11,785.32 and 6,651.36

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Solution

The fourth proportional to 8,543.12, 11,785.32 and 6,651.36 is: 9,175.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.12 : 11,785.32 = 6,651.36 : x
  2. Step 2: Convert to fraction form
    8,543.12/11,785.32 = 6,651.36/x
  3. Step 3: Cross multiply
    8,543.12x = 11,785.32 × 6,651.36
  4. Step 4: Simplify right side
    8,543.12x = 78,388,406.04
  5. Step 5: Solve for x
    x = 78,388,406.04/8,543.12
  6. Step 6: Final answer
    x = 9,175.62

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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.