Home / 7,678.15-11,518.72-2,997.97

Finding the Fourth Proportional to 7,678.15, 11,518.72 and 2,997.97

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Solution

The fourth proportional to 7,678.15, 11,518.72 and 2,997.97 is: 4,497.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.15 : 11,518.72 = 2,997.97 : x
  2. Step 2: Convert to fraction form
    7,678.15/11,518.72 = 2,997.97/x
  3. Step 3: Cross multiply
    7,678.15x = 11,518.72 × 2,997.97
  4. Step 4: Simplify right side
    7,678.15x = 34,532,740.71
  5. Step 5: Solve for x
    x = 34,532,740.71/7,678.15
  6. Step 6: Final answer
    x = 4,497.54

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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.