Home / 7,814.23-11,718.87-2,618.89

Finding the Fourth Proportional to 7,814.23, 11,718.87 and 2,618.89

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Solution

The fourth proportional to 7,814.23, 11,718.87 and 2,618.89 is: 3,927.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,814.23 : 11,718.87 = 2,618.89 : x
  2. Step 2: Convert to fraction form
    7,814.23/11,718.87 = 2,618.89/x
  3. Step 3: Cross multiply
    7,814.23x = 11,718.87 × 2,618.89
  4. Step 4: Simplify right side
    7,814.23x = 30,690,431.45
  5. Step 5: Solve for x
    x = 30,690,431.45/7,814.23
  6. Step 6: Final answer
    x = 3,927.51

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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.