Home / 3,908.56-5,392.80-2,417.20

Finding the Fourth Proportional to 3,908.56, 5,392.80 and 2,417.20

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Solution

The fourth proportional to 3,908.56, 5,392.80 and 2,417.20 is: 3,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.56 : 5,392.80 = 2,417.20 : x
  2. Step 2: Convert to fraction form
    3,908.56/5,392.80 = 2,417.20/x
  3. Step 3: Cross multiply
    3,908.56x = 5,392.80 × 2,417.20
  4. Step 4: Simplify right side
    3,908.56x = 13,035,476.16
  5. Step 5: Solve for x
    x = 13,035,476.16/3,908.56
  6. Step 6: Final answer
    x = 3,335.11

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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.