Home / 8,690.08-11,993.52-6,458.80

Finding the Fourth Proportional to 8,690.08, 11,993.52 and 6,458.80

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Solution

The fourth proportional to 8,690.08, 11,993.52 and 6,458.80 is: 8,914.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.08 : 11,993.52 = 6,458.80 : x
  2. Step 2: Convert to fraction form
    8,690.08/11,993.52 = 6,458.80/x
  3. Step 3: Cross multiply
    8,690.08x = 11,993.52 × 6,458.80
  4. Step 4: Simplify right side
    8,690.08x = 77,463,746.98
  5. Step 5: Solve for x
    x = 77,463,746.98/8,690.08
  6. Step 6: Final answer
    x = 8,914.04

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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.