Home / 7,809.78-11,717.91-2,616.06

Finding the Fourth Proportional to 7,809.78, 11,717.91 and 2,616.06

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Solution

The fourth proportional to 7,809.78, 11,717.91 and 2,616.06 is: 3,925.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.78 : 11,717.91 = 2,616.06 : x
  2. Step 2: Convert to fraction form
    7,809.78/11,717.91 = 2,616.06/x
  3. Step 3: Cross multiply
    7,809.78x = 11,717.91 × 2,616.06
  4. Step 4: Simplify right side
    7,809.78x = 30,654,755.63
  5. Step 5: Solve for x
    x = 30,654,755.63/7,809.78
  6. Step 6: Final answer
    x = 3,925.18

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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.