Home / 3,908.34-5,393.79-2,415.87

Finding the Fourth Proportional to 3,908.34, 5,393.79 and 2,415.87

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Solution

The fourth proportional to 3,908.34, 5,393.79 and 2,415.87 is: 3,334.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.34 : 5,393.79 = 2,415.87 : x
  2. Step 2: Convert to fraction form
    3,908.34/5,393.79 = 2,415.87/x
  3. Step 3: Cross multiply
    3,908.34x = 5,393.79 × 2,415.87
  4. Step 4: Simplify right side
    3,908.34x = 13,030,695.45
  5. Step 5: Solve for x
    x = 13,030,695.45/3,908.34
  6. Step 6: Final answer
    x = 3,334.07

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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.