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Finding the Fourth Proportional to 7,857.66, 10,843.41 and 4,320.81

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Solution

The fourth proportional to 7,857.66, 10,843.41 and 4,320.81 is: 5,962.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.66 : 10,843.41 = 4,320.81 : x
  2. Step 2: Convert to fraction form
    7,857.66/10,843.41 = 4,320.81/x
  3. Step 3: Cross multiply
    7,857.66x = 10,843.41 × 4,320.81
  4. Step 4: Simplify right side
    7,857.66x = 46,852,314.36
  5. Step 5: Solve for x
    x = 46,852,314.36/7,857.66
  6. Step 6: Final answer
    x = 5,962.63

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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.