Home / 5,185.93-7,146.35-3,689.65

Finding the Fourth Proportional to 5,185.93, 7,146.35 and 3,689.65

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Solution

The fourth proportional to 5,185.93, 7,146.35 and 3,689.65 is: 5,084.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.93 : 7,146.35 = 3,689.65 : x
  2. Step 2: Convert to fraction form
    5,185.93/7,146.35 = 3,689.65/x
  3. Step 3: Cross multiply
    5,185.93x = 7,146.35 × 3,689.65
  4. Step 4: Simplify right side
    5,185.93x = 26,367,511.83
  5. Step 5: Solve for x
    x = 26,367,511.83/5,185.93
  6. Step 6: Final answer
    x = 5,084.44

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Half scale
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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.