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Finding the Fourth Proportional to 7,767.77, 10,721.46 and 4,786.16

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Solution

The fourth proportional to 7,767.77, 10,721.46 and 4,786.16 is: 6,606.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,767.77 : 10,721.46 = 4,786.16 : x
  2. Step 2: Convert to fraction form
    7,767.77/10,721.46 = 4,786.16/x
  3. Step 3: Cross multiply
    7,767.77x = 10,721.46 × 4,786.16
  4. Step 4: Simplify right side
    7,767.77x = 51,314,622.99
  5. Step 5: Solve for x
    x = 51,314,622.99/7,767.77
  6. Step 6: Final answer
    x = 6,606.09

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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.