Home / 3,971.64-5,476.84-2,398.80

Finding the Fourth Proportional to 3,971.64, 5,476.84 and 2,398.80

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Solution

The fourth proportional to 3,971.64, 5,476.84 and 2,398.80 is: 3,307.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.64 : 5,476.84 = 2,398.80 : x
  2. Step 2: Convert to fraction form
    3,971.64/5,476.84 = 2,398.80/x
  3. Step 3: Cross multiply
    3,971.64x = 5,476.84 × 2,398.80
  4. Step 4: Simplify right side
    3,971.64x = 13,137,843.79
  5. Step 5: Solve for x
    x = 13,137,843.79/3,971.64
  6. Step 6: Final answer
    x = 3,307.91

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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.