Home / 5,118.15-7,678.44-2,486.94

Finding the Fourth Proportional to 5,118.15, 7,678.44 and 2,486.94

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Solution

The fourth proportional to 5,118.15, 7,678.44 and 2,486.94 is: 3,731.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.15 : 7,678.44 = 2,486.94 : x
  2. Step 2: Convert to fraction form
    5,118.15/7,678.44 = 2,486.94/x
  3. Step 3: Cross multiply
    5,118.15x = 7,678.44 × 2,486.94
  4. Step 4: Simplify right side
    5,118.15x = 19,095,819.57
  5. Step 5: Solve for x
    x = 19,095,819.57/5,118.15
  6. Step 6: Final answer
    x = 3,731.00

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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.