Home / 7,815.75-10,786.01-4,278.99

Finding the Fourth Proportional to 7,815.75, 10,786.01 and 4,278.99

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Solution

The fourth proportional to 7,815.75, 10,786.01 and 4,278.99 is: 5,905.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.75 : 10,786.01 = 4,278.99 : x
  2. Step 2: Convert to fraction form
    7,815.75/10,786.01 = 4,278.99/x
  3. Step 3: Cross multiply
    7,815.75x = 10,786.01 × 4,278.99
  4. Step 4: Simplify right side
    7,815.75x = 46,153,228.93
  5. Step 5: Solve for x
    x = 46,153,228.93/7,815.75
  6. Step 6: Final answer
    x = 5,905.16

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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.