Home / 7,858.71-10,845-4,321.85

Finding the Fourth Proportional to 7,858.71, 10,845 and 4,321.85

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Solution

The fourth proportional to 7,858.71, 10,845 and 4,321.85 is: 5,964.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.71 : 10,845 = 4,321.85 : x
  2. Step 2: Convert to fraction form
    7,858.71/10,845 = 4,321.85/x
  3. Step 3: Cross multiply
    7,858.71x = 10,845 × 4,321.85
  4. Step 4: Simplify right side
    7,858.71x = 46,870,409.03
  5. Step 5: Solve for x
    x = 46,870,409.03/7,858.71
  6. Step 6: Final answer
    x = 5,964.14

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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.